Whatever you are building needed to be on wheels, here come the 3inch-Swivel-Caster-020. This wheel caster has a wheel diameter of 75mm or 2.953" inch in inches. Dimensions of the caster wheel is 21mm (.827" inch). The Caster with the wheel from end to end is 93mm = 3.661" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 65mm x 54mm and holes distance of 51mm x 38mm. Low drag was achieved by a Thermoplastic Rubber core on a Thermoplastic Rubber tire spinning freely with a Plain bearing. Bearing in mind that every caster wheel has the load capacity of 121 lb with a Swivel type. Temperature range = -40 to 180 F. Buy the 3inch-Swivel-Caster-020 now, just add the quantity to basket and click on Checkout.