The McCormick 6660036A1 is a genuine OEM belt specifically designed for McCormick X10 series agricultural tractors. This original equipment part is crucial for reliable power transmission and ensures the continued performance and longevity of your machinery. Confirmed fitment includes McCormick tractor models X10.25, X10.30, X10.35, X10.40, and X10.50. With a length of 1060 mm and a width of 13 mm, this belt meets precise specifications for a perfect fit.