The McCormick 6639814A1 pulley is an authentic OEM component designed for a wide range of McCormick agricultural machinery, including the CX, MC, MTX, and XTX tractor series. This robust pulley is engineered for precise fitment and reliable performance within the machinery's power transmission system. It features an outer diameter of 120 mm, an inner diameter of 25 mm, and a width of 30 mm, with a weight of 0.80 kg, ensuring durability and efficient operation.