Utilizing VXB20040NY makes it feasible to pull and push items instead of transport The wheel diameter is 40mm or 1.575" inch in inches. The wheel has a width of 40mm=1.575" inch. Overall height of the wheel caster is 55mm = 2.165" inch. Mounted via a Top Plate that has the size of 34mm x 34mm and the holes distance of 129mm x 74mm. The weehl core material is Nylon and has a Nylon tire with a low friction Roller bearing. Each caster will carry the load of 55 lb and is Swivel type. Environment temperature range is -40 to 180 F. Buy the VXB20040NY now, just add the quantity to basket and click on Checkout.