Mounting the 4inch-Swivel-Caster-031 Wheel Caster can make your life easier, push or pull your new project on wheels. This caster is rolled on a wheel that has 100mm diameter/3.937" inch inches. The thickness of the wheel is 53mm or 2.087" inch. The overall height of the caster is 142mm or 5.591" inch. Mounted via a Top Plate that has the size of 100mm x 115mm and the holes distance of 75mm x 85mm. Rolling with a wheel core material of Polypropylene core and Rubber and a Polypropylene core and Rubber tire rolled over Double ball beaing. Bearing in mind that every caster wheel has the load capacity of 441 lb with a Swivel type. Last and not least the temperature range = -40 to 180 F. Remember, you will have to buy the 4inch-Swivel-Caster-031 in order to have it :).