Low cost solution to the heavy weight objects movement, Wheel casters like our VXB005100PVCF are used to roll your machine or equipment back and forth. And rolling on wheel that has 100mm diameter/3.937" inch. Dimensions of the caster wheel is 50mm (1.969" inch). The Caster with the wheel from end to end is 142mm = 5.591" inch. Top Plate is the method of installing the caster to your equipment, here are the dimensions 100mm x 115mm with the holes distance of 75mm x 85mm. The weehl core material is Polyvinyl Chloride and has a Polyvinyl Chloride tire with a low friction Double ball beaing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 441 lb with a Fixed type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB005100PVCF in order to get one :).