Wheel casters like the 3inch-Swivel-Caster-017 are used to roll your built machine or equipment back and forth. 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. This wheel caster can be mounted using a Top Plate with the dimensions of 93mm x 62mm and holes distance of 45mm x 72mm. The Double ball bearing design will enable the Thermoplastic Rubber tire to roll easily with a core made of Thermoplastic Rubber. 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 Swivel type. The temperature range is -40 to 180 F. Enjoy our 3inch-Swivel-Caster-017, we wish all the best in your project.