Moves large items quicker using the VXB005100BAPUF. The wheel diameter is 100mm or 3.937" inch in inches. The wheel has a width of 50mm=1.969" inch. The Caster with the wheel from end to end is 142mm = 5.591" inch. Mounted via a Top Plate that has the size of 115mm x 100mm and the holes distance of 72mm x 85mm. This caster wheel core material is Aluminum and Polyurethane and has a Aluminum and Polyurethane tire spinning over Double ball beaing. Each caster will carry the load of 661 lb and is Fixed type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB005100BAPUF in order to get one :).