Mounting VXB005200YGVC is the economoical solution of building project to move around by pushing or pulling. Dia. Measured of the caster wheel in metric standard 200mm which is equal to 7.874" inch with imperial units. Sizes of the caster wheel is 50mm (1.969" inch). The caster dimensions heightwise is 240mm/9.449" inch. Top Plate is the method of installing the caster to your equipment, dimensions are 100mm x 115mm with the holes distance of 75mm x 85mm. The Double ball beaing design will enable the Polypropylene core and Polyurethane tire to roll easily with a core made of Polypropylene core and Polyurethane. Each caster wheel will carry the load of 661 lb and is Swivel type. The Temperature range is -40 to 180 F. FYI, you will need to buy the VXB005200YGVC in order to get one :).