"The Fairbanks Rigid Zinc-Plated Caster features all-steel exclusive Lockweld construction. Zinc galvanized finish. Semi-steel wheels. U.S.A. Wheel Diameter in. 2 1/2, Wheel Type Semi-steel, Wheel Width in. 1, Bolt Hole Spacing 3 15/32 x 1 1/16, Caster Type Rigid, Foot Brake No, Casters qty. 1, Finish Type Zinc plated, Mount Height in. 3 1/4, Capacity lbs. 200, Overall Height in. 3 1/4, Bearing Type Plain, Top Plate Dimensions L x W in. 4 3/8 x 2 1/8, Material Type Steel. Zinc electro-galvanized finish Cold-formed for added strength and durability Unique construction replaces the king pin with a strong welded structure Rugged semi-steel wheel 200-lb. capacity"