Minimization of possible untoward effects on operator by installing VXB007050TPR just ask your operator to push and pull, but not carry. And rolling on wheel that has 50mm diameter/1.969" inch. Dimensions of the caster wheel is 17mm (.669" inch). The Caster with the wheel from end to end is 65mm = 2.559" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 58mm x 48mm and holes distance of 46mm x 35mm. Low drag was achieved by a Thermoplastic Rubber core on a Thermoplastic Rubber tire spinning freely with a Plain bearing. Each caster will carry the load of 77 lb and is Swivel type. The caster temperature range = -40 to 180 F. Buy the VXB007050TPR now, just add the quantity to basket and click on Checkout.