You need 3inch-Lock-Swivel-Caster-016 to have your office desk, equipment or even a machine to easily roll them around. This caster is rolled on a wheel that has 75mm diameter/2.953" inch inches. Dimensions of the caster wheel is 40mm (1.575" inch). The overall height of the caster is 195mm or 7.677" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 110mm x 100mm x 4mm fork:3.5mm and holes distance of 85mm x 75mm. The ball bearing design will enable the Polyurethane and Polypropylene tire to roll easily with a core made of Polyurethane and Polypropylene. Bearing in mind that every caster wheel has the load capacity of 441 lb with a Swivel and Upper Locking type. The temperature range is -40 to 180 F. Remember, you will have to buy the 3inch-Lock-Swivel-Caster-016 in order to have it :).