POM Plastic Bearing 6000-6914 Glass Balls / Deep Groove Ball Bearings Waterproof
Model: 6000 – 6016、6200 – 6210、6800 – 6812、6900 – 6914. Rings: The inner and outer rings are made of POM, which is known as Race Steel, for longer life and durability. POM has small friction factor, good wear resistance, and adopts high-strength glass ball, which turns more smoothly and reduces the noise.