"Super tough Fairbanks Swivel Polyurethane Mold-On Caster withstands severe shock and overloading. Precision tapered center roller bearing assures exact raceway alignment for easier swiveling. Green powder-coated finish. Capacity lbs. 3,000, Wheel Diameter in. 12, Casters qty. 1, Finish Type Green, Foot Brake No, Wheel Width in. 3, Bolt Hole Spacing 6 1/8 x 4 1/8, Bearing Type Roller, Overall Height in. 14 1/2, Caster Type Swivel, Material Type Steel, Mount Height in. 14 1/2, Top Plate Dimensions L x W in. 7 1/4 x 6, Wheel Type Polyurethane/semi-steel core. Heavy plate steel with heat-treated ball races, hardened bearings and sealed raceways Hardened 1in. king bolt welded to the top plate will not stretch or break loose Sealed, tapered roller bearing keeps out dust and dirt Extra-heavy top plate and structurally formed legs can withstand severe shock and overloading Rugged polyurethane on cast iron wheel 3000-lb. capacity"