Tens of thousands of different kinds to select from to have your office Desk/chair sliding easily right and left, install the VXB005100WCF. The wheel diameter is 100mm or 3.937" inch in inches. The wheel has a width of 50mm=1.969" inch. The caster dimensions heightwise is 142mm/5.591" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 115mm x 100mm x 5.5mm and holes distance of 72mm x 85mm. This caster wheel core material is Cast Iron and has a Cast Iron tire spinning over Roller bearing. Bearing in mind that every caster wheel has the load capacity of 551 lb with a Fixed type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB005100WCF in order to get one :).