The McCormick 708773A2 is a genuine PTO (Power Take-Off) shaft designed for a wide range of McCormick agricultural tractors. This essential component ensures reliable power transmission for various implements. It is compatible with McCormick X4.20, X4.30, X4.40, X4.50, 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 series tractors. This part is also used in Landini and Argo Tractors models.