The McCormick 6640421A1 is a genuine OEM brake disc designed for optimal braking performance in various McCormick tractor models, including the C, CX, MC, X60, X70, and XTX series. This high-quality brake disc ensures durability and consistent stopping power, essential for safe and efficient operation. With an outer diameter of 200 mm, an inner diameter of 100 mm, and a thickness of 12.5 mm, it is engineered to precise specifications for a perfect fit and reliable function.