Tens of thousands of different kinds to select from to have your office Desk/chair sliding easily right and left, install the VXB007050PVCB. The wheel diameter is 50mm or 1.969" inch in inches. Dimensions of the caster wheel is 17mm (.669" inch). The Caster with the wheel from end to end is 69mm = 2.717" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 50mm x 50mm and holes distance of 36mm x 36mm. This caster wheel core material is Polyvinyl Chloride and has a Polyvinyl Chloride tire spinning over Plain bearing. Bearing in mind that every caster wheel has the load capacity of 44 lb with a Swivel and Upper Brake type. The caster temperature range = -40 to 180 F. Buy our VXB007050PVCB, we wish all the best.