... Transparent round caster 2) Diameter: 50-75 3)Good cost performance: anti-friction, good impact resistance, high load Specificaton: PP, PVC, POM, PU ... casters: 1. high quality and reasonable price. 2.Smoothing running, unique design 3.Low noise design, good protection to the floors ... 154 50-90Configuration screw way M8-M12, 5/16-1/2. Stem way Diameter 8-18. The connection is excessive set. The length ...