Rubbermaid commercial heavy duty adaptable utility cart replacement casters hold up to 125 lbs. Per caster. Including two swivel locking and two fixed casters, this replacement package is for use with Rubbermaid commercial heavy duty adaptable utility carts (sold separately). these casters provide added stability for the cart and feature high quality TPR material that absorbs shock and provides floor surface protection and quiet operation. Excellent on linoleum, Tile, terrazzo, wood, smooth concrete, and carpet.