Halifax or Vancouver our Low priced answert to the heavy weight objects movement, Wheel casters like our VXB007040 will be rolling your machine or equipment back and forth. Wheel dia. is 40mm or 1.575" inch in inches. The wheel has a width of 17mm=.669" inch. The height of the wheel caster is 54mm = 2.126" inch. This wheel mounting is Top Plate with the dimensions of 45mm x 40mm and holes distance of 35mm x 28.5mm. The weehl core material is Rubber and has a Rubber tire with a low friction Delrin bearing. Each caster wheel will carry the load of 44 lb and is Swivel type. The Temperature range is -40 to 180 F. Buy the VXB007040 now, we ship on the same day.