The McCormick 3665606M1 is a genuine OEM Power Take-Off (PTO) shaft designed for a wide range of McCormick, Massey Ferguson, and Landini agricultural tractors. This essential drivetrain component measures 440mm in length, features 21 splines, and has a diameter of 35mm, ensuring reliable power transmission for implements. It is compatible with various McCormick CX, MC, MTX, and XTX series models, as well as numerous Massey Ferguson 100, 200, 300, 500, 600, 8000 series, and Landini 60, 70, 80, 90, 100 series tractors.