Mounting VXB005150CR is the economoical solution of building project to move around by pushing or pulling. Spinning on wheel that has 150mm diameter/5.906" inch. Sizes of the caster wheel is 50mm (1.969" inch). The caster dimensions heightwise is 195mm/7.677" 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. Low drag was achieved by a Rubber core on a Rubber tire spinning freely with a Roller bearing. Each caster wheel will carry the load of 617 lb and is Swivel type. The Temperature range is -40 to 180 F. FYI, you will need to buy the VXB005150CR in order to get one :).