Heavy weight capability and Durability made the wheel casters like the VXB005125CPUF a must use, get your do it yourself object move around. The wheel diameter is 125mm or 4.921" inch in inches. The thickness of the wheel is 50mm or 1.969" inch. The Caster with the wheel from end to end is 167mm = 6.575" 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. This caster wheel core material is Iron core and Polyurethane and has a Iron core and Polyurethane tire spinning over Double ball beaing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 882 lb with a Fixed type. Temperature range is -40 to 180 F. Buy our VXB005125CPUF, we wish all the best.