Mounting VXB005C125CPUB1 is the economoical solution of building project to move around by pushing or pulling. Spinning on wheel that has 125mm diameter/4.921" inch. Sizes of the caster wheel is 50mm (1.969" inch). The height of the wheel caster is 175mm = 6.890" inch. This wheel mounting is Top Plate with the dimensions of 115mm x 100mm x 6mm and holes distance of 72mm x 85mm. Low drag was achieved by a Cast Iron and Polyurethane core on a Cast Iron and Polyurethane tire spinning freely with a Roller bearing. Having in mind that every caster wheel has the load capacity of 838 lb with a Swivel and Center Brake type. The caster wheel temperature range = -40 to 180 F. FYI, you will need to buy the VXB005C125CPUB1 in order to get one :).