sourcing map 4.5mm POM Coin Ring Making Balls, Plastic Bearing Ball 100pcs

• 4.5mm in diameter
• Helps prevent marring the coin surface
• G0-G3 precision grade balls, Self-lubricating
• Excellent strength, high toughness and wear resistance
• Package includes 100 piece balls

Description: POM plastic (also called Polyformaldehyde) is a tough material with a low coefficient of friction and high abrasion resistance. Excellent wear-resisting and self-lubricating than any other engineering plastics, pom balls are suit to working between -40℃ to 130℃ for long time. Used in applications such as drawer slides, precision bearings, pumps and valves, check valves, flow meters, and measurement instruments that operate in aggressive environments. Specially useful for casters, drawer slides, door locks and many other applications. Specification: Size: 4.5mm Tolerance: +/-0.05mm Material: Polyoxy-Methylene (POM, Acetal, Polyacetal and Polyformaldehyde) Package Content: 100 Piece