Tens of thousands of different kinds to select from to have your office Desk/chair sliding easily right and left, install the VXB005100BAPU. And rolling on wheel that has 100mm diameter/3.937" inch. Dimensions of the caster wheel is 50mm (1.969" inch). The caster dimensions heightwise is 142mm/5.591" inch. Top Plate is the method of installing the caster to your equipment, here are the dimensions 115mm x 100mm with the 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. Bearing in mind that every caster wheel has the load capacity of 661 lb with a Swivel type. Environment temperature range is -40 to 180 F. Buy our VXB005100BAPU, we wish all the best.