Low cost solution to the heavy weight objects movement, Wheel casters like our VXB009C150BFS are used to roll your machine or equipment back and forth. The wheel diameter is 150mm or 5.906" inch in inches. The wheel has a width of 75mm=2.953" inch. The Caster with the wheel from end to end is 215mm = 8.465" inch. Top Plate is the method of installing the caster to your equipment, here are the dimensions 200mm x 153mm Top Plate: 14mm+housing: 10mm with the holes distance of 160mm x 90mm. The weehl core material is Cast iron polyurethane and has a Cast iron polyurethane tire with a low friction Precision double ball bearing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 3307 lb with a Swivel type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB009C150BFS in order to get one :).