Efficient VXB20050NYTB makes it feasible to pull and push items instead of transport Dia. Measured of the caster wheel in metric standard 50mm which is equal to 1.969" inch with imperial units. The wheel has a width of 50mm=1.969" inch. The height of the wheel caster is 57mm = 2.244" inch. Mounted via a that has a size of 34mm x 34mm and the holes distance of 129mm x 74mm. Low drag was achieved by a Nylon core on a Nylon tire spinning freely with a Roller bearing. Maximum load calpacity that could not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 66 lb with a Swivel and Upper Brake type. The caster wheel temperature range = -40 to 180 F. Buy the VXB20050NYTB now, we ship on the same day.