Vestil Cst-Kb-4X2Pup-Swb Polyurethane Swivel With Brake Caster 4″ Diameter X 2″ Width 617 Lb. Capacity, Light Blue/Gray

Polyurethane is 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.