You need 3inch-Caster-002 to have your office desk, equipment or even a machine to easily roll them around. Diameter of the caster wheel is a metric standard 75mm that is equal to 2.953" inch with imperial units. 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. Rolling with a wheel core material of Polyvinyl Chloride and a Polyvinyl Chloride tire rolled over Double ball bearing. Here come the maximum load that should be applied on every wheel, remember to add safety factor, when calculating the load capacity 176 lb with a Rigid type. The temperature range is -40 to 180 F. Buy the 3inch-Caster-002 now, just add the quantity to basket and click on Checkout.