CNBTR  Steel Groove Rigid Caster Wheel 1.2" Dia 45# for Industrial Machines Carts 200KG Size of 1.2inch diameter grooved wheel, rigid top plate. These pulleys can be bolted on or welded on, just take wheel out and installed it Made of high quality 45# steel, good to use and long service life. Application: Used on industrial carts, assembly fixtures, containers, racks, and other equipment.