Heavy weight capability and Durability made the wheel casters like the VXB009100BCPUF a must use, get your do it yourself object move around from our Toronto biz. Spinning on wheel that has 100mm diameter/3.937" inch. The wheel has a width of 50mm=1.969" inch. The height of the wheel caster is 124mm = 4.882" inch. Mounted via a Top Plate that has a size of 138mm x 110mm x 10mm and the holes distance of 110mm x 75mm. The Precision double ball bearing design will enable the Cast iron polyurethane tire to roll easily with a core made of Cast iron polyurethane. Each caster wheel will carry the load of 772 lb and is Fixed type. The caster wheel temperature range = -40 to 180 F. FYI, you will need to buy the VXB009100BCPUF in order to get one :).