"Double ball raceway swivel caster with 1/2in. diameter king pin. Zinc-plated, 12-gauge steel fork and top plate. Caster Type Swivel, Casters qty. 4, Finish Type Zinc plated, Foot Brake No, Material Type Steel, Mount Height in. 5, Bearing Type Plain, Bolt Hole Spacing 3 7/16 x 2 3/8, Capacity lbs. 300, Overall Height in. 5, Top Plate Dimensions L x W in. 4 1/8 x 3 3/8, Wheel Diameter in. 4, Wheel Type Polyolefin, Wheel Width in. 1 3/16. Durable 4in. polyolefin wheel Double ball raceway swivel caster 12 gauge steel fork and top plate, with durable zinc plating 300-lb. capacity per caster"
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