Heavy weight capability and Durability made the wheel casters like the VXB007065 a must use, get your do it yourself object move around. And rolling on wheel that has 65mm diameter/2.559" inch. The wheel has a width of 23mm=.906" inch. The Caster with the wheel from end to end is 84mm = 3.307" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 65mm x 54mm and holes distance of 51mm x 38mm. This caster wheel core material is Rubber and has a Rubber tire spinning over Delrin bearing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 66 lb with a Swivel type. Environment temperature range is -40 to 180 F. Buy our VXB007065, we wish all the best.