Minimization of possible untoward effects on operator by installing VXB0045125PUOB just ask your operator to push and pull, but not carry. And rolling on wheel that has 125mm diameter/4.921" inch. The thickness of the wheel is 40mm or 1.575" inch. Overall height of the wheel caster is 165mm = 6.496" inch. Mounted via a Top Plate that has the size of 110mm x 100mm x 4mm fork:3.5mm and the holes distance of 85mm x 75mm. The weehl core material is Polyurethane and Polypropylene and has a Polyurethane and Polypropylene tire with a low friction ball bearing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 661 lb with a Swivel and Upper Brake type. Temperature range is -40 to 180 F. Buy the VXB0045125PUOB now, just add the quantity to basket and click on Checkout.