"The Northern Industrial Tools 5in. Light-Duty Swivel Caster features a dual brake that stops wheel rotation with an easy foot motion. Recommended for hand-pushed operation. Bolt Hole Spacing 3 x 2 3/16, Top Plate Dimensions L x W in. 4 x 2 5/16, Finish Type Zinc plated, Foot Brake Dual-action, Caster Type Swivel w/brake, Wheel Diameter in. 5, Bearing Type Double ball raceway, Mount Height in. 5 3/4, Wheel Type Rubber/steel core, Capacity lbs. 220, Casters qty. 1, Overall Height in. 5 3/4, Wheel Width in. 1 1/2. Double ball raceway provides smooth swivel action Thread guards on wheel offer additional safety Zinc plated finish 5in. dia. x 1 1/2in.W wheel has rubber tread on a steel core for easy rolling and 220-lb. load capacity"