The McCormick 550839R91 is a genuine OEM conveyor chain roller designed for International Harvester combine harvesters. This essential component ensures reliable and efficient movement within the combine's conveyor system. With a length of 95 mm, a height of 51 mm, and a weight of 0.12 kg, this robust roller is engineered for durability and precise fitment in models such as the IH 1400, 1420, 1440, 1460, 1480, 1620, 1640, 1660, and 1680 series combines.