The McCormick 6677986A1 is a genuine OEM drive belt designed for various McCormick X-series agricultural tractors. This high-quality belt ensures reliable power transmission and optimal performance. With a confirmed length of 2654 mm and a width of 12.7 mm, it is engineered to meet the exact specifications of McCormick machinery, providing durability and a precise fit for models including X5.20, X5.30, X5.40, X5.50, X5.60, X6.420, X6.430, X6.440, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X8.660, X8.670, and X8.680.