Low cost solution to the heavy weight objects movement, Wheel casters like our VXB005200PPF are used to roll your machine or equipment back and forth. And rolling on wheel that has 200mm diameter/7.874" inch. Dimensions of the caster wheel is 45mm (1.772" inch). The Caster with the wheel from end to end is 240mm = 9.449" inch. Top Plate is the method of installing the caster to your equipment, here are the dimensions 115mm x 110mm x 6mm with the holes distance of 72mm x 85mm. The weehl core material is Polypropylene and has a Polypropylene tire with a low friction Double ball beaing. Each caster will carry the load of 1543 lb and is Fixed type. Environment temperature range is -40 to 180 F. Very important notice, you need to buy the VXB005200PPF in order to get one :).