Tens of thousands of different kinds to select from to have your office Desk/chair sliding easily right and left, install the VXB004100HPVCB. The wheel diameter is 100mm or 3.937" inch in inches. The wheel has a width of 30mm=1.181" inch. The caster dimensions heightwise is 130mm/5.118" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 93mm x 62mm and holes distance of 45mm x 72mm. This caster wheel core material is Polyvinyl Chloride and has a Polyvinyl Chloride tire spinning over Double ball bearing. Bearing in mind that every caster wheel has the load capacity of 154 lb with a Swivel and Upper Brake type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB004100HPVCB in order to get one :).