This is a genuine McCormick T261591122 strut, an OEM part designed for various McCormick X-series tractors. It provides essential structural support and stability for compatible models. This strut is suitable for McCormick X4.20, X4.30, X4.40, X4.50, X4.60, X4.70, X4.80, X5.20, X5.30, X5.40, X5.50, X5.60, X5.70, X6.420, X6.430, X6.440, X7.440, X7.450, X7.460, X7.650, X7.660, X7.670, X7.680, X7.690, X8.660, X8.670, and X8.680 models, guaranteeing optimal performance and a precise fit.