"6in. x 2in. thermoplastic rubber wheel is made of high-impact, abrasion-resistant gray nonmarking rubber bonded to a polyolefin core. Designed for factory, warehouse, cold storage, food service and institutional use. Top Plate Dimensions L x W in. 4 1/2 x 4, Overall Height in. 7 1/2, Bolt Hole Spacing 3-3 5/8 x 2 5/8-3, Caster Type Swivel, Mount Height in. 7 1/2, Casters qty. 1, Foot Brake No, Wheel Diameter in. 6, Capacity lbs. 410, Finish Type Zinc plated, Wheel Width in. 2, Material Type Steel, Wheel Type Thermoplastic rubber, Bearing Type Roller. Bright zinc-plated finish Sectioned forked legs for added strength Double-ball raceways for added strength and swivel-ability Rugged 3/4in. king pin"