Mounting VXB013100BCPUSB is the Low cost solution of making a project to move around by pushing or pulling. The wheel diameter is 100mm or 3.937" inch in inches. The thickness of the wheel is 32mm or 1.260" inch. The caster dimensions heightwise is 137mm/5.394" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 95mm x 70mm and holes distance of 75mm x 52mm. The Ball bearing design will enable the Polyurethane tire to roll easily with a core made of Polyurethane. Each caster will carry the load of 176 lb and is Swivel and Upper Brake type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB013100BCPUSB in order to get one :).