Make your life easier, have big objects easier to Maneuver using the VXB005125FPB1 Wheel Caster. The wheel diameter is 125mm or 4.921" inch in inches. Dimensions of the caster wheel is 45mm (1.772" inch). The Caster with the wheel from end to end is 167mm = 6.575" inch. Top Plate is the method of installing the caster to your equipment, here are the dimensions 100mm x 115mm with the holes distance of 75mm x 85mm. The Double ball beaing design will enable the co-polypropylene tire to roll easily with a core made of co-polypropylene. Each caster will carry the load of 617 lb and is Swivel and Center Brake type. Temperature range is -40 to 180 F. Very important notice, you need to buy the VXB005125FPB1 in order to get one :).