The Shepherd 2-1/2 in. Polypropylene Wheel Swivel Plate Caster gives mobility to heavy loads on surfaces where quiet movement and floor protection are important. It features a 175 lb. load rating and has a lightweight, non-marking wheel that is impervious to water and resists chemicals. The caster attaches easily with a 2-3/4 in. x 3-7/8 in. plate and 4 screws. Color: black.