Wheel casters like the 6inch-Caster-010 are used to roll your built machine or equipment back and forth. This wheel caster has a wheel diameter of 150mm or 5.906" inch in inches. The thickness of the wheel is 40mm or 1.575" inch. The overall height of the caster is 195mm or 7.677" inch. Mounted via a Top Plate that has the size of 110mm x 100mm x 4mm fork:3.5mm and the holes distance of 85mm x 75mm. Low drag was achieved by a Polyurethane and Polypropylene core on a Polyurethane and Polypropylene tire spinning freely with a ball bearing. Each caster will carry the load of 772 lb and is Fixed type. Temperature range = -40 to 180 F. Remember, you will have to buy the 6inch-Caster-010 in order to have it :).