Whatever you are building needed to be on wheels, here come the 8inch-Lock-Swivel-Caster-012. This wheel caster has a wheel diameter of 200mm or 7.874" inch in inches. The thickness of the wheel is 50mm or 1.969" inch. The caster dimensions heightwise is 241mm/9.488" inch. Top Plate is the method of installing the caster to your equipment, the dimensions are 100mm x 115mm with the holes distance of 75mm x 85mm. Low drag was achieved by a Iron core and Polyurethane core on a Iron core and Polyurethane tire spinning freely with a Double ball beaing. Each caster will carry the load of 838 lb and is Swivel and Center Locking type. Temperature range = -40 to 180 F. Remember, you will have to buy the 8inch-Lock-Swivel-Caster-012 in order to have it :).