Minimization of possible untoward effects on operator by installing VXB005C100CPUF just ask your operator to push and pull, but not carry. The wheel diameter is 100mm or 3.937" inch in inches. The thickness of the wheel is 50mm or 1.969" inch. The Caster with the wheel from end to end is 150mm = 5.906" inch. Mounted via a Top Plate that has the size of 115mm x 100mm x 6mm and the holes distance of 72mm x 85mm. The weehl core material is Cast Iron and Polyurethane and has a Cast Iron and Polyurethane tire with a low friction Roller bearing. Each caster will carry the load of 661 lb and is Fixed type. The caster temperature range = -40 to 180 F. Buy our VXB005C100CPUF, we wish all the best.