Heavy weight capability and Durability made the wheel casters like the VXB00520050BNYB1 a must use, get your do it yourself object move around. Diameter size of the caster wheel has a metric standard 200mm which is equal to 7.874" inch with imperial units. The thickness of the wheel is 50mm or 1.969" inch. The Caster with the wheel from end to end is 240mm = 9.449" inch. Top Plate is the method of installing the caster to your equipment, here are the dimensions 115mm x 110mm x 6mm with the holes distance of 72mm x 85mm. Low drag was achieved by a Polyamide (Nylon) core on a Polyamide (Nylon) tire spinning freely with a Double ball beaing. Each caster will carry the load of 1543 lb and is Side Brake type. The caster temperature range = -40 to 180 F. Buy our VXB00520050BNYB1, we wish all the best.