Minimization of possible untoward effects on operator by installing VXB005C150CPUB1 just ask your operator to push and pull, but not carry. Diameter size of the caster wheel has a metric standard 150mm which is equal to 5.906" inch with imperial units. Dimensions of the caster wheel is 50mm (1.969" inch). The Caster with the wheel from end to end is 200mm = 7.874" inch. This wheel caster can be mounted using a 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. Each caster will carry the load of 992 lb and is Swivel and Center Brake type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB005C150CPUB1 in order to get one :).