Heavy weight capability and Durability made the wheel casters like the VXB009A7550PUF a must use, get your do it yourself object move around. The wheel diameter is 75mm or 2.953" inch in inches. The wheel has a width of 50mm=1.969" inch. The Caster with the wheel from end to end is 110mm = 4.331" inch. Mounted via a Top Plate that has the size of 100mm x 115mm and the holes distance of 75mm x 85mm. Low drag was achieved by a Polyurethane and Iron core on a Polyurethane and Iron tire spinning freely with a Ball bearing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 1102 lb with a Fixed type. The caster temperature range = -40 to 180 F. Buy our VXB009A7550PUF, we wish all the best.