Check the listing for details. GRAINGER APPROVED 1NWL6 Plate Caster,Swivel,Iron,7 1/4"H 1NWL6. Condition: New. Listed at 43.30 USD. Swivel, Plate Caster, Load Rating 1200 lb, Swivel Lock Type No Lock Included, Wheel Dia. 6 in, Wheel Width 2 in, Wheel/Tread Material Iron, Wheel Core Material Iron, Non-Marking Yes, Number of Wheels 1, Caster Brake Type No Brake, Tread Shape Standard Medium-duty standard plate casters mount to the bottom of carts, dollies, platform trucks, tool boxes, storage racks, and other industrial equipment that will be moved manually at moderate speeds. They are suitable for transporting loads along smooth, flat surfaces in areas where the casters won't encounter shock loading, such as shops, docks, warehouses, waste-disposal areas, manufacturing plants, and other industrial settings. These casters have zinc-plated steel frames. Swivel versions of these casters have double ball swivel bearings, whi.