VXB20050BPP2 is a device comprising 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. And rolling on wheel that has 50mm diameter/1.969" inch. Dimensions of the caster wheel is 50mm (1.969" inch). The caster dimensions heightwise is 60mm/2.362" inch. Mounted via a Top Plate that has the size of 38mm x 38mm and the holes distance of 129mm x 74mm. This caster wheel core material is Polypropylene and has a Polypropylene tire spinning over Roller bearing. Each caster will carry the load of 77 lb and is Swivel type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB20050BPP2 in order to get one :).