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