Tag: Foam Wiper Ball

  • The Role of cis-1,4-Polyisoprene in MERIT’s Foam Wiper Balls: A Game-Changer in Oilfield Drilling Cementing

    The Role of cis-1,4-Polyisoprene in MERIT’s Foam Wiper Balls: A Game-Changer in Oilfield Drilling Cementing

    The Role of cis-1,4-Polyisoprene in MERIT’s Foam Wiper Balls: A Game-Changer in Oilfield Drilling Cementing


    Introduction

    In oilfield cementing operations, the integrity of the wellbore is critically dependent on efficient displacement of drilling fluids and residual particulates from the casing and drill pipe. Foam wiper balls play a vital role in this process, ensuring effective fluid separation and facilitating optimal cement bonding. MERIT Automotive, an industry leader in oilfield cementing tools, has engineered its foam wiper balls using high-performance cis-1,4-Polyisoprene, a material that has redefined expectations for durability, elasticity, and operational efficiency under downhole conditions.


    Material Insight: What is cis-1,4-Polyisoprene?

    Cis-1,4-Polyisoprene is a highly elastic polymer that can be sourced naturally (as in natural rubber) or synthesized to deliver enhanced consistency and mechanical performance. Structurally, this elastomer exhibits a high degree of polymer chain alignment, granting it:

    • Exceptional elongation at break
    • High tensile strength
    • Superior resistance to mechanical fatigue
    • Robust performance across wide temperature and pressure ranges

    These properties make cis-1,4-Polyisoprene uniquely suited for dynamic, high-pressure applications—such as those encountered in oilfield cementing.


    Why MERIT Chooses cis-1,4-Polyisoprene for Foam Wiper Balls

    1. Superior Elastic Recovery

    The high elastic modulus of cis-1,4-Polyisoprene allows MERIT’s foam wiper balls to undergo significant radial compression and axial elongation, enabling smooth passage through narrow restrictions, mechanical set tools, and varying ID profiles without degradation.

    2. Enhanced Abrasion Resistance

    The polymer’s resistance to shear and friction allows the wiper balls to maintain surface integrity against steel casing walls, particulate-laden fluids, and cementitious slurries—minimizing structural wear and extending service life.

    3. High Chemical Compatibility

    Cis-1,4-Polyisoprene demonstrates excellent resistance to water-based and oil-based drilling fluids, brines, and cement additives. This ensures consistent mechanical performance in chemically aggressive environments.

    4. Effective Fluid Displacement

    MERIT’s wiper balls engineered with cis-1,4-Polyisoprene conform to pipe geometry, generating a high-friction circumferential seal that aids in reliable fluid displacement. This minimizes channeling and enhances zonal isolation, which is critical to cement integrity.


    Field Performance: Case Studies

    Case Study 1: Offshore High-Pressure Cementing

    An offshore rig operating in the North Sea adopted MERIT’s cis-1,4-Polyisoprene wiper balls during a critical liner cementing run. The material’s elasticity allowed seamless navigation through a tight restriction followed by successful full-bore expansion. The result: a 20% improvement in cement displacement uniformity and elimination of post-job remedial actions.

    Case Study 2: Deepwater Application – Fluid Interface Control

    In a deepwater well off the coast of Brazil, fluid interface separation was paramount. MERIT’s foam wiper balls achieved over 30% reduction in mud-cement mixing zone, improving cement sheath bonding and reducing formation exposure to unremoved fluids.

    Case Study 3: Extended Reach Drilling in Texas

    Operators in the Permian Basin encountered premature failure with conventional wiper balls in extended-reach laterals. MERIT’s cis-1,4-Polyisoprene solution provided uninterrupted passage across 13,000 feet of lateral section, ensuring full displacement of drilling fluid and reliable barrier formation.


    Material and Operational Advantages

    PropertyValue/Benefit
    Material Typecis-1,4-Polyisoprene (Natural/Synthetic Rubber)
    Elastic Recovery≥ 90% post-deformation
    Abrasion ResistanceHigh – ideal for high-RPM wiper operations
    Chemical ResistanceExcellent – compatible with WBM, OBM, and cement
    Temperature Range-40°C to +149°C (–40°F to +300°F)
    Parting Stretch350% to 500%, with controlled compression response

    Conclusion

    The integration of cis-1,4-Polyisoprene into MERIT’s foam wiper ball design represents a technological advancement in oilfield displacement tools. This material provides unmatched elasticity, superior resistance to downhole stressors, and reliable performance in complex wellbore conditions. By optimizing the physical interface between fluids and tubulars, these wiper balls ensure maximum displacement efficiency and long-term well integrity.

    As global operators seek higher reliability and cost-efficiency in cementing operations, MERIT Automotive remains the trusted partner in high-performance displacement technology, backed by superior material science and global field success.


    Contact Us
    For technical inquiries or custom sizing:
    📞 +90 533 523 97 42
    🌐 www.meritautomotive.com


  • How Foam Wiper Balls are Inserted and Used in Drill Pipes: A Step-by-Step Guide

    How Foam Wiper Balls are Inserted and Used in Drill Pipes: A Step-by-Step Guide

    Foam wiper balls are typically inserted into the drill pipe or casing by first loading them into the top of the pipe. Here’s how the process generally works:

    1. Lubricate the Ball: To ensure smooth passage, the foam ball is often lubricated with drilling mud or a similar fluid.
    2. Insert the Ball: The foam ball is then placed at the top of the pipe or casing.
    3. Pressurize the System: The drilling mud or another fluid is pumped into the system, pushing the foam ball down the pipe. The foam ball wipes away residual fluids, debris, and mud as it moves.
    4. Ball Travels Through the Pipe: As it travels down, the foam ball expands slightly to ensure it wipes the entire internal diameter of the pipe or casing.

    So, the foam balls are not loaded inside a separate loading pipe but directly into the drill pipe or casing at the top.

  • What Do You Do When A Foam Wiper Ball Stuck and Jammed Inside The OD of Drill Pipe in Oilfields

    What Do You Do When A Foam Wiper Ball Stuck and Jammed Inside The OD of Drill Pipe in Oilfields

    What Do You Do When A Foam Wiper Ball Stuck and Jammed Inside The OD of Drill Pipe in Oilfields?

    What Do You Do When A Foam Wiper Ball Stuck and Jammed Inside The OD of Drill Pipe in Oilfields Answerede By Merit

    A stuck foam wiper ball in the OD (outer diameter) of a drill pipe can be a tricky situation and the solution depends on several factors, including:

    Severity of the Situation:

    • Location: Where is the ball stuck? Is it near the surface or deep down the hole? Deeper locations present greater challenges and risks.
    • Cause: What caused the ball to get stuck? Did it expand excessively due to fluids or temperature? Did it encounter a restriction in the pipe? Identifying the cause can help choose the best removal method.
    • Damage: Is the pipe itself damaged? Is there any deformation or tearing around the stuck ball? Significant damage might require more drastic measures.

    Available Resources:

    • Equipment: Do you have the necessary tools and equipment for retrieval? This might include wireline units, fishing tools, and specialized equipment for manipulating the ball.
    • Personnel: Are there trained and experienced personnel available to safely handle the retrieval operation?
    • Time and Cost: How much time and cost are you willing to invest in resolving the issue? Certain methods may be faster but more expensive.

    Here are some potential methods for removing a stuck foam wiper ball from the OD of a drill pipe, depending on the circumstances:

    Gentle Methods:

    • Fluid Circulation: Try circulating fluid through the pipe at different pressures and flow rates. This might dislodge the ball if it’s not firmly stuck.
    • Compression Tools: Use specialized tools, like inflatable packers or compression rings, to gently squeeze the ball and potentially create enough space for it to pass through a restriction.
    • Chemical Dissolvents: If the ball is made of a material susceptible to specific solvents, consider using them cautiously to try and shrink or partially dissolve it. This should only be done with proper safety precautions and expert guidance.

    More Aggressive Methods:

    • Drilling or Cutting: If all else fails, consider drilling or cutting a small hole through the pipe and extracting the ball through that opening. This method is risky and should be a last resort, as it compromises the integrity of the pipe.
    • Pipe Replacement: In extreme cases, if the ball cannot be removed and the pipe is severely damaged, replacing the entire section of pipe might be necessary.

    Important Considerations:

    • Safety: Always prioritize the safety of personnel involved. This means properly assessing the risks, using appropriate tools and procedures, and involving experienced professionals if needed.
    • Environmental Impact: Be mindful of any potential environmental consequences of your chosen method, especially regarding fluid spills or damage to the drilling site.
    • Cost-Effectiveness: Weigh the cost of various options against the value of the affected pipe and potential losses due to downtime.

    Ultimately, the best course of action depends on the specific details of your situation. Consulting with experienced drilling professionals and equipment suppliers is crucial for getting the most accurate advice and implementing the most effective solution for your case.

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  • The Unsung Hero of the Oilfield: The Foam Wiper Ball

    The Unsung Hero of the Oilfield: The Foam Wiper Ball

    Behind every successful oil well lies a symphony of specialized tools and techniques. While drill bits and pumps grab the headlines, there are many lesser-known players that contribute significantly to the smooth operation. One such unsung hero is the foam wiper ball.

    The Unsung Hero of the Oilfield: The Foam Wiper Ball of Merit

    What is a foam wiper ball?

    Imagine a soft, resilient ball made of high-density foam, designed to fit snugly inside a drill pipe. That’s your foam wiper ball. During the cementing process, a layer of cement coats the interior of the drill pipes. While crucial for well integrity, this cement residue can hinder subsequent operations. Enter the foam wiper ball.

    How does it work?

    Pumped down the drill pipe along with drilling fluids, the wiper ball acts like a giant pipe cleaner. Its open-cell foam construction grabs onto and absorbs residual cement and debris, leaving the pipe squeaky clean. Think of it as giving the pipes a thorough scrub after a messy job.

    Why are foam wiper balls important?

    Clean drill pipes are essential for several reasons:

    • Improved efficiency: Removing cement build-up reduces friction, allowing for smoother running of tools and fluids. This translates to faster operations and reduced costs.
    • Enhanced safety: Contaminated pipes can lead to equipment damage and safety hazards. The wiper ball helps prevent such issues by ensuring a clean work environment.
    • Better well integrity: Residual cement can compromise the well’s structural integrity. Thorough cleaning by the wiper ball ensures a strong and reliable wellbore.

    Beyond cementing:

    Foam wiper balls have diverse applications beyond cementing jobs. They can be used for:

    • Removing drilling fluids and debris
    • Separating different fluids within the pipe
    • Cleaning wellbore perforations

    Choosing the right wiper ball:

    With various sizes, materials, and pressure ratings available, selecting the right wiper ball is crucial. Factors like pipe diameter, fluid type, and operating conditions need to be considered. Consulting with experienced oilfield service providers ensures you get the optimal wiper ball for your specific needs.

    The next time you hear about a successful oil well, remember the silent hero behind the scenes – the foam wiper ball. Its unassuming presence plays a vital role in ensuring efficient, safe, and productive oilfield operations.

    Looking for high-quality foam wiper balls for your next project?

    MERIT offers a wide range of wiper balls to meet your specific requirements. Contact us today to discuss your needs and get expert advice on choosing the right solution.

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  • Foam Wiper Ball for Drill Pipe

    Foam Wiper Ball for Drill Pipe

    Foam wiper ball for drill pipe in the oil and gas industry, maintaining the integrity of your drill pipe is crucial for ensuring both safety and profitability. A key part of this maintenance process involves effectively removing debris and contaminants from the inside of the pipe. This is where foam wiper balls come in as essential tools.

    What are Foam Wiper Balls?

    Foam wiper balls are spherical wipe out devices made from a specially formulated, high-density foam material. They are designed to be attached to the end of a drill string and run down the inside of the pipe, effectively wiping away any unwanted materials clinging to the inner wall.

    Benefits of Using Foam Wiper Balls:

    • Enhanced Wiping Efficiency: Foam wiper balls offer a highly effective way to remove various substances from the drill pipe, including:
      • Cement residue
      • Drilling fluids
      • Mud
      • Sand
      • Scale
      • Organic materials
      • Corrosion products

    This thorough wipe helps to prevent potential problems such as:

    • Reduced flow rate: Debris buildup can lead to a decrease in the flow rate of fluids through the pipe, impacting drilling efficiency.

    • Increased wear and tear: Abrasive materials like sand can cause damage to the inside of the pipe, leading to costly repairs and downtime.

    • Corrosion: Certain substances, like drilling fluids, can create an environment conducive to corrosion, significantly weakening the pipe’s integrity.

    • Improved Pipeline Integrity: By removing contaminants that can contribute to corrosion and wear, foam wiper balls help to maintain the integrity and longevity of your drill pipe. This leads to:

      • Reduced maintenance costs
      • Extended lifespan of the pipe
      • Improved safety during operations
    • Versatility: Foam wiper balls are available in various sizes to fit different drill pipe diameters, making them suitable for a wide range of applications. They are also compatible with various fluids and additives used in drilling operations.

    • Cost-Effective: While foam wiper balls require an initial investment, their long-term benefits in terms of improved efficiency, reduced maintenance costs, and extended pipe life make them a cost-effective solution.

    Types of Foam Wiper Balls:

    Different types of foam wiper balls are available depending on your specific needs and application. Some of the most common types include:

    • Standard foam wiper balls: These are made from a high-density foam material and are suitable for general wiping purposes.
    • Heavy-duty foam wiper balls: These are designed for more challenging wiping jobs where there is a significant amount of debris or contaminants present.
    • Abrasive foam wiper balls: These incorporate abrasive elements into the foam material to provide additional wiping power for stubborn residues.
    • Chemical-resistant foam wiper balls: These are made from a special material that is resistant to various chemicals commonly used in drilling fluids and additives.

    Choosing the Right Foam Wiper Ball:

    When choosing a foam wiper ball, consider the following factors:

    • Size: The diameter of the ball should match the size of your drill pipe.
    • Type: Choose the appropriate type of ball based on the type and amount of debris you need to remove.
    • Material: Select a material that is compatible with the fluids and additives you are using.
    • Pressure rating: Ensure the ball is rated for the pressure used in your drilling operation.

    Applications of Foam Wiper Balls:

    Foam wiper balls are used in various applications throughout the oil and gas industry, including:

    • Cementing: After cementing operations, foam wiper balls are used to remove excess cement and prevent it from hardening inside the pipe.
    • Drilling: Between runs, wiper balls can be used to clean the drill pipe of any accumulated mud, sand, or other debris.
    • Completions: Prior to running completion equipment, foam wiper balls can be used to clean the pipe and ensure a smooth operation.
    • Pipeline wiping: Foam wiper balls can also be used to clean pipelines of various sizes and lengths, removing unwanted deposits and ensuring optimal flow.

    Conclusion:

    Foam wiper balls are a vital tool for maintaining the cleanliness and integrity of your drill pipe. By effectively removing debris and contaminants, they help to improve drilling efficiency, reduce maintenance costs, and extend the life of your valuable equipment. When choosing foam wiper balls, consider your specific needs and application to ensure you select the most suitable type for optimal results.

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    General Size Reference in.(mm)
    Actual Size in.(mm)Part NoTypical wiping range in. (mm)Minimal restriction*** in. (mm)
    3.00 (76.10)3.15 (80)WP100032.5 to 1.10 (63.5 to 27.90)0.500 (12.7)
    4.00 (102.00)3.94 (100)WP100043.12 to 1.38 (79.20 to 35.10)0.625 (15.9)
    5.00 (127.00)4.92 (125)WP100054.00 to 1.75 (101.60 to 44.50)0.750 (19.1)
    6.00 (152.40)5.91 (150)WP100064.75 to 2.00 (120.70 to 50.80)0.875 (22.20)
    7.00 (178.10)6.89 (175)WP100075.50 to 2.38 (139.70 to 60.50)1.000 (25.40)
    8.00 (203.00)7.87 (200)WP100087.00 to 3.00 (177.80 to 76.20)1.375 (34.90)
    9.00 (225.00)8.85 (225)WP100098.00 to 3.20 (203.20 to 81.28)1.440 (36.58)
    10.00 (250.00)9.84 (250)WP100108.40 to3.51 ( 213.35 to 89.15)1.500 (38.10)
    11.00 (275.00)10.82 (275)WP100118.75 to 3.75 (222.30 to 95.30)1.750(44.50)
    12.00 (300.00)11.81 (300)WP100129.00 to 4.32 (228.60to 109.73)2.000 (50.80)
    *** Custom sizes and special features upon request. Please feel free to ask for more information***
    Foam Wiper Ball Sizes
    Foam Wiper Ball for Drill Pipe By Merit
  • MERIT is main manufacturer of the foam wiper balls for 5″ and 3 1/2″ DP

    MERIT is main manufacturer of the foam wiper balls for 5″ and 3 1/2″ DP

    MERIT is main manufacturer of the foam wiper balls for 5″ and 3 1/2″ DP. Its foam ball for 5″ DP pass through 3 1/2″ DP/Tubing as well. Please feel free a RFQ for your oilfield needs. Merit’s foam wiper balls made from natural rubber should be stored in a cool, dry place away from direct sunlight and extreme temperatures. Ensure they are kept in their original packaging and away from chemicals or substances that could degrade the rubber. Regular inspection for any signs of damage or deterioration is recommended.

    Estimated delivery time to USA: 6-8 workdays;
    Estimated deliverytime to Canada, Mexico: 7-9 workdays;
    Estimated delivery time to Australia, New Zealand: 9-11 workdays;
    Estimated deliverytime to European countries: 4-7 workdays;
    Estimated deliverytime to Asian countries: 6-8 workdays.
    Estimated deliverytime to Libya, Algeria, UAE, Qatar, KSA, Oman, Bahrain: 8-12 workdays.

    Foam wiperball
  • Foam Wiper Ball

    Foam Wiper Ball

    Foam Wiper Ball, your trusted partner in delivering top-notch spare parts to enhance the performance of oil and gas drilling operations. Our premium foam wiper balls are designed to revolutionize the way you clean and maintain drill pipes and tubing during cementing operations. With a proven track record of success in thousands of applications, our balls are your go-to solution for efficient fluid separation and debris removal.

    Foam Wiper Ball of Merit
    Merit Automotive stands out in this field with its high-quality foam wiper balls, which are renowned for their robustness and reliability

    Unmatched Features for Unparalleled Performance

    1. Superior Material Composition

    Crafted from natural rubber, our Foam Wiper Ball is engineered to withstand extreme conditions. Operating flawlessly in a temperature range from -40°F (-40°C) to 250°F (121°C), these wiper balls are built for durability and resilience in the harshest oil and gas environments.

    2. Exceptional Parting Stretch

    With a remarkable parting stretch of 380% to 440%, our wiperballs can effortlessly navigate through small restrictions without sustaining damage. This unique feature ensures that the balls can pass through mechanical setting tools, diverters, and liner running tools, providing an unmatched level of versatility in various drilling scenarios.

    3. Multi-Purpose Applications

    Our Foam Wiper Ball is not just limited to cleaning drill pipes; they excel in a variety of applications. Use them to wipe the drill pipe or work string, preventing the accumulation of scale on the inner surface. Additionally, these versatile wiper balls can be pumped behind cement to facilitate fluid separation and remove sheath deposition from the work string’s interior.

    Value That Speaks for Itself

    1. Efficient Tubular and Drill Pipe Wiping

    Join the ranks of satisfied customers who have experienced the effectiveness of our foam balls in cleaning tubulars and drill pipes. These wiper balls ensure that your equipment remains free from cement, fluids, and debris, contributing to enhanced operational efficiency and longevity.

    2. Fluid Isolation During Cementing Operations

    Our wiper foam balls play a crucial role in isolating fluids during cementing operations. By preventing contamination and ensuring fluid separation, these wiper balls contribute to the success and integrity of your cementing processes.

    3. Proven Success in the Field

    Thousands of foam wiper balls from us have been deployed successfully in the field. Our customers trust our products to deliver reliable and consistent results, making us a preferred choice in the oil and gas industry.

    Why Choose Our Manufactures?

    1. Quality Assurance

    We prioritize quality in every aspect of our Foam Wiper Ball. Rigorous testing and adherence to industry standards ensure that our products meet and exceed your expectations.

    2. Customization Options

    At FoamWiperBall, we understand that every drilling operation is unique. That’s why we offer customization options to tailor our foam wiper balls to your specific requirements, ensuring optimal performance in your distinct drilling environment.

    3. Expert Support

    Our team of experts is dedicated to providing unparalleled support. From product selection to post-purchase assistance, we are committed to ensuring that you receive the guidance you need for successful deployment and operation.

    Foam-Wiper-Ball-Made-In-Merit
    Unleash Performance, Embrace Precision: Our Foam Wiper Ball redefines wiping standards in the oil and gas drilling industry, promoting impeccable wellbore conditions for enhanced productivity and operational excellence.

    Conclusion

    Elevate your drilling operations with our foam wiper balls – the industry’s trusted solution for efficient, reliable, and versatile tubular and drill pipe cleaning. Join the ranks of satisfied customers who have experienced the value of our premium products. Contact us today to discuss your requirements and discover how our Foam Wiper Ball can optimize your oil and gas drilling processes.

    1. Material Composition: Polyisoprene (Natural Rubber)
      • Our products are crafted from high-quality polyisoprene, a natural rubber known for its exceptional durability and resilience in challenging oil and gas environments.
    2. Extended-Life Rubber Formula for Longevity
      • Benefit from our extended-life rubber formula, ensuring a prolonged lifespan for our articles. This feature enhances the cost-effectiveness of our products by reducing the frequency of replacements.
    3. Parting Strength: 380% to 440%
      • Experience the versatility of our manufactures with a remarkable parting strength ranging from 380% to 440%. This ensures that the balls can navigate through small restrictions without being damaged, offering flexibility in various drilling scenarios.
    4. Swelling: 5% in Water
      • Our commodities exhibit minimal swelling, with only a 5% increase in size when exposed to water. This characteristic contributes to the stability and consistent performance of the wiper balls during cleaning and cementing operations.
    5. Deformation Pressure: 32 psi – 65 psi (22 N/cm2-45 N/cm2)
      • With a deformation pressure ranging from 32 psi to 65 psi (22 N/cm2 to 45 N/cm2), our outputs maintain their structural integrity under varying pressure conditions, ensuring reliable performance in diverse drilling environments.
    6. Temperature Range: -40°F to 250°F (-40°C to 121°C)
      • Operate with confidence in a wide temperature range, from -40°F to 250°F (-40°C to 121°C). Our goods are designed to withstand extreme temperatures, providing consistent functionality in both cold and hot drilling conditions.
    7. Breaking Elongation: 440%
      • Experience the exceptional breaking elongation of our modules, reaching up to 440%. This feature highlights the resilience and durability of our products, contributing to their ability to endure the demands of rigorous drilling operations.
    8. Abrasive Resistance: Good
      • Count on the good abrasive resistance of our pieces. This quality ensures effective cleaning of tubulars and drill pipes, removing scale, cement, fluids, and debris without compromising the integrity of the wiper balls.
    9. Elastic to: -40°F (-40°C)
      • Retain the elasticity of our offerings even in extremely low temperatures. With elasticity maintained down to -40°F (-40°C), these wiper balls remain pliable and effective in cold drilling conditions.
    10. Material: Natural Rubber Vulcanized at 311°F (155°C)
      • Our entities are crafted from natural rubber vulcanized at 311°F (155°C), ensuring a robust and reliable material composition that meets the demanding requirements of oil and gas drilling operations.
    11. Flammability: High Flammability, Burns with Soot
      • Please be aware that our items have high flammability characteristics and may burn with soot. Exercise caution in environments where flammability is a concern, and adhere to safety protocols.
    12. Stability: Not Available with Acids, Alkalis, Oils, Fats, and Solvents
      • Maintain product stability by avoiding exposure to acids, alkalis, oils, fats, and solvents. Adhering to recommended usage guidelines will ensure the optimal performance of our products in the field.

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    For your convenience, refer to table below for a comprehensive overview of foamball sizes and their corresponding application parameters. This detailed reference guide ensures that you have the essential information at your fingertips, simplifying the selection process for your specific needs.

    Elevate your cementing operations with the advanced technology and unparalleled performance of our natural rubber foam matrix wiper balls. Contact us today to explore how these innovative solutions can optimize your pumping operations and redefine industry standards.


    General Size Reference in.(mm)
    Actual Size in.(mm)Part NoTypical wiping range in. (mm)Minimal restriction*** in. (mm)
    3.00 (76.10)3.15 (80)WP100032.5 to 1.10 (63.5 to 27.90)0.500 (12.7)
    4.00 (102.00)3.94 (100)WP100043.12 to 1.38 (79.20 to 35.10)0.625 (15.9)
    5.00 (127.00)4.92 (125)WP100054.00 to 1.75 (101.60 to 44.50)0.750 (19.1)
    6.00 (152.40)5.91 (150)WP100064.75 to 2.00 (120.70 to 50.80)0.875 (22.20)
    7.00 (178.10)6.89 (175)WP100075.50 to 2.38 (139.70 to 60.50)1.000 (25.40)
    8.00 (203.00)7.87 (200)WP100087.00 to 3.00 (177.80 to 76.20)1.375 (34.90)
    9.00 (225.00)8.85 (225)WP100098.00 to 3.20 (203.20 to 81.28)1.440 (36.58)
    10.00 (250.00)9.84 (250)WP100108.40 to3.51 ( 213.35 to 89.15)1.500 (38.10)
    11.00 (275.00)10.82 (275)WP100118.75 to 3.75 (222.30 to 95.30)1.750(44.50)
    12.00 (300.00)11.81 (300)WP100129.00 to 4.32 (228.60to 109.73)2.000 (50.80)
    *** Custom sizes and special features upon request. Please feel free to ask for more information***
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