Halifax or Vancouver our Low priced answert to the heavy weight objects movement, Wheel casters like our VXB005150PVCF will be rolling your machine or equipment back and forth. Wheel dia. is 150mm or 5.906" inch in inches. The wheel has a width of 50mm=1.969" inch. The Caster with the wheel from end to end 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. This caster wheel core made of Polyvinyl Chloride and has a Polyvinyl Chloride tire spinning over Double ball beaing. Each caster wheel will carry the load of 617 lb and is Fixed type. The caster wheel temperature range = -40 to 180 F. FYI, you will need to buy the VXB005150PVCF in order to get one :).