Heavy weight capability and Durability made the wheel casters like the VXB005200WC a must use, get your do it yourself object move around from our Toronto biz. Spinning on wheel that has 200mm diameter/7.874" inch. The thickness of the wheel is 50mm or 1.969" inch. The Caster with the wheel from end to end is 240mm = 9.449" inch. This wheel mounting is Top Plate with the dimensions of 115mm x 100mm x 5.5mm and holes distance of 72mm x 85mm. The weehl core material is Cast Iron and has a Cast Iron tire with a low friction Roller bearing. Each caster wheel will carry the load of 772 lb and is Swivel type. The Temperature range is -40 to 180 F. FYI, you will need to buy the VXB005200WC in order to get one :).