Vestil Cst-Pb-4X2Pua-Swb Polyurethane Precision Ball Bearing Swivel With Brake Caster 4″ Diameter X 2″ Width 551 Lb. Capacity, Blue/Gray

Polyurethane mold on aluminum casters are ideal for most environments. It is resistant to a variety of chemicals, and produces an easy roll for ergonomic applications. Also provides good floor preservation and works effectively in both indoor and outdoor environments.