Wheel casters like the 3inch-Swivel-Caster-024 are used to roll your built machine or equipment back and forth. Diameter of the caster wheel is a metric standard 75mm that is equal to 2.953" inch with imperial units. Dimensions of the caster wheel is 30mm (1.181" inch). The caster dimensions heightwise 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 Polypropylene tire to roll easily with a core made of Polypropylene. 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. Temperature range = -40 to 180 F. Enjoy our 3inch-Swivel-Caster-024, we wish all the best in your project.