VXB005125BAPUB1 is a device building a wheel that's connected to the base of a huge object like a trailers, your home furniture, even your truck to transfer the item more quickly and readily. them.You need {Item Name} to have your office desk, equipment or even a machine to easily roll them around. Wheel dia. is 125mm or 4.921" inch in inches. The wheel has a width of 50mm=1.969" inch. The caster dimensions heightwise is 164mm/6.457" inch. Mounted via a Top Plate that has a size of 115mm x 100mm and the holes distance of 72mm x 85mm. This caster wheel core made of Aluminum and Polyurethane and has a Aluminum and Polyurethane tire spinning over Double ball beaing. Having in mind that every caster wheel has the load capacity of 772 lb with a Side Brake type. The caster wheel temperature range = -40 to 180 F. FYI, you will need to buy the VXB005125BAPUB1 in order to get one :).