This OEM McCormick 390503X1 roller is a critical component designed for various International Harvester tractor models, including the B414, 434, 444, and models from the 276 to 985 series, as well as Hydro 84 and Hydro 85. Engineered to precise specifications, it features an outer diameter of 50 mm, an inner diameter of 25 mm, and a width of 15 mm, weighing 0.12 kg. This roller ensures reliable and smooth operation, contributing to the longevity and performance of the machinery.