Heavy weight capability and Durability made the wheel casters like the VXB005100YGVCB1 a must use, get your do it yourself object move around. The wheel diameter is 100mm or 3.937" inch in inches. The thickness of the wheel is 50mm or 1.969" inch. The caster dimensions heightwise is 142mm/5.591" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 100mm x 115mm and holes distance of 75mm x 85mm. The Double ball beaing design will enable the Polypropylene core and Polyurethane tire to roll easily with a core made of Polypropylene core and Polyurethane. 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 Swivel and Center Brake type. Temperature range is -40 to 180 F. Very important notice, you need to buy the VXB005100YGVCB1 in order to get one :).