Heavy weight capability and Durability made the wheel casters like the VXB007125RB a must use, get your do it yourself object move around. And rolling on wheel that has 125mm diameter/4.921" inch. Dimensions of the caster wheel is 27mm (1.063" inch). The caster dimensions heightwise is 161mm/6.339" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 75mm x 75mm and holes distance of 55mm x 55mm. The weehl core material is Grey rubber and has a Grey rubber tire with a low friction Plain bearing. Bearing in mind that every caster wheel has the load capacity of 110 lb with a Swivel type. Environment temperature range is -40 to 180 F. Very important notice, you need to buy the VXB007125RB in order to get one :).