Mounting the 2inch-Swivel-Caster-009 Wheel Caster can make your life easier, push or pull your new project on wheels. This caster is rolled on a wheel that has 50mm diameter/1.969" inch inches. Dimensions of the caster wheel is 50mm (1.969" inch). The Caster with the wheel from end to end is 48mm = 1.890" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 38mm x 38mm and holes distance of 129mm x 74mm. The caster core is made of Nylon and Polyvinyl Chloride and has a Nylon and Polyvinyl Chloride tire with a low friction Roller bearing. Each caster will carry the load of 55 lb and is Swivel type. Temperature range = -40 to 180 F. Remember, you will have to buy the 2inch-Swivel-Caster-009 in order to have it :).