Tens of thousands of different kinds to select from to have your office Desk/chair sliding easily right and left, install the VXB005200BAPUB1. And rolling on wheel that has 200mm diameter/7.874" inch. The thickness of the wheel is 50mm or 1.969" inch. Overall height of the wheel caster is 240mm = 9.449" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 115mm x 100mm and holes distance of 72mm x 85mm. The weehl core material is Aluminum and Polyurethane and has a Aluminum and Polyurethane tire with a low friction Double ball beaing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 992 lb with a Side Brake type. The caster temperature range = -40 to 180 F. Buy our VXB005200BAPUB1, we wish all the best.