The Shepherd 2 in. Polypropylene Wheel Rigid Caster gives mobility to heavy loads on smooth, hard surfaces. It features a 125 lb. load rating and a rigid design that lets the caster move forward and backward only. The wheel is lightweight, non-marking, waterproof and chemical resistant, and the caster attaches with a 1-1/2 in. x 2-11/16 in. plate with 4 screws. Color: Black.