"All-steel exclusive Lockweld construction. Zinc galvanized finish. Swivel casters are single ball race. Polyolefin Wheels. U.S.A. Wheel Width in. 1 1/4, Material Type Steel, Mount Height in. 3 3/4, Overall Height in. 3 3/4, Top Plate Dimensions L x W in. 4 1/8 x 3 1/8, Wheel Diameter in. 3, Wheel Type Polyolefin, Bolt Hole Spacing 3 7/16 x 2 3/8, Capacity lbs. 250, Caster Type Swivel, Casters qty. 1, Finish Type Zinc plated, Foot Brake No, Bearing Type Plain. Cold-formed for greater strength and durabilty Zinc electro-galvanized finish assure a bright look and rust prevention Unique construction replaces the king pin with a strong welded structure Rugged polyolefin wheel"