POM Plastic Bearings Glass Balls Hardness High Waterproof No Sealing ID 3/4/5mm
Material：♦Bearing Ring:POM Plastic. Pom Has a Small Friction Factor, Good Abrasion Resistance, and the Use of High-strength Glass Balls, the Rotation Is Smoother, and More to Reduce the Generation of Noise.
POM Plastic Bearings Glass Balls Hardness High Waterproof No Sealing ID 3/4/5mm
Material： ♦Bearing Ring:POM Plastic. Pom Has a Small Friction Factor, Good Abrasion Resistance, and the Use of High-strength Glass Balls, the Rotation Is Smoother, and More to Reduce the Generation of Noise.