Tens of thousands of different kinds to select from to have your office Desk/chair sliding easily right and left, install the VXB005100GBL. And rolling on wheel that has 100mm diameter/3.937" inch. Dimensions of the caster wheel is 53mm (2.087" inch). Overall height of the wheel caster is 142mm = 5.591" inch. Top Plate is the method of installing the caster to your equipment, here are the dimensions 100mm x 115mm with the holes distance of 75mm x 85mm. This caster wheel core material is Polypropylene core and Rubber and has a Polypropylene core and Rubber tire spinning over Double ball beaing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 441 lb with a Swivel type. Temperature range is -40 to 180 F. Very important notice, you need to buy the VXB005100GBL in order to get one :).