Check the listing for details. GRAINGER APPROVED 33H701 PlateCaster,Swivl,Polyurethane,3 15/16"H 33H701. Condition: New. Listed at 24.83 USD. Swivel, Plate Caster, Load Rating 450 lb, Swivel Lock Type No Lock Included, Wheel Dia. 3 in, Wheel Width 1 3/4 in, Wheel/Tread Material Polyurethane, Wheel Core Material Polyolefin, Non-Marking Yes, Number of Wheels 1, Caster Brake Type No Brake, Tread Shape Standard Low-profile light-duty and medium-duty standard plate casters mount onto the bottom of carts, vending machines, server cabinets, lab equipment, business machines, and other equipment that will be moved manually at moderate speeds. Low-profile casters keep the equipment close to the ground to maximize the equipment's stability while rolling. These light-duty and medium-duty standard plate casters have zinc-plated steel frames and are suitable for transporting loads along smooth, flat surfaces in areas where the casters won't e.