Mounting the 3inch-Caster-001 Wheel Caster can make your life easier, push or pull your new project on wheels. This wheel caster has a wheel diameter of 75mm or 2.953" inch in inches. The thickness of the wheel is 30mm or 1.181" inch. The Caster with the wheel from end to end is 105mm = 4.134" inch. Mounted via a Top Plate that has the size of 93mm x 62mm and the holes distance of 45mm x 72mm. Low drag was achieved by a Thermoplastic Rubber core on a Thermoplastic Rubber tire spinning freely with a Double ball bearing. Bearing in mind that every caster wheel has the load capacity of 176 lb with a Rigid type. The temperature range is -40 to 180 F. Remember, you will have to buy the 3inch-Caster-001 in order to have it :).