Tens of thousands of different kinds to select from to have your office Desk/chair sliding easily right and left, install the VXB20060GPPTB. Diameter size of the caster wheel has a metric standard 60mm which is equal to 2.362" inch with imperial units. The thickness of the wheel is 60mm or 2.362" inch. Overall height of the wheel caster is 80mm = 3.150" inch. is the method of installing the caster to your equipment, here are the dimensions 47mm x 47mm with the holes distance of 129mm x 74mm. The weehl core material is Polypropylene and has a Polypropylene tire with a low friction Roller bearing. Each caster will carry the load of 66 lb and is Swivel and Upper Brake type. The caster temperature range = -40 to 180 F. Buy our VXB20060GPPTB, we wish all the best.