VXB00510050BNYF is a device building a wheel that's connected to the base of a huge object like a trailers, your home furniture, even your truck to transfer the item more quickly and readily. them.You need {Item Name} to have your office desk, equipment or even a machine to easily roll them around. Wheel dia. is 100mm or 3.937" inch in inches. Sizes of the caster wheel is 50mm (1.969" inch). The height of the wheel caster is 142mm = 5.591" inch. This wheel mounting is Top Plate with the dimensions of 115mm x 110mm x 6mm and holes distance of 72mm x 85mm. Low drag was achieved by a Polyamide (Nylon) core on a Polyamide (Nylon) tire spinning freely with a Double ball beaing. Maximum load calpacity that could not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 1102 lb with a Fixed type. Ambient temperature range is -40 to 180 F. FYI, you will need to buy the VXB00510050BNYF in order to get one :).