This genuine McCormick 3910276M91 disc is a critical component for various McCormick, Massey Ferguson, and Challenger agricultural tractors. Measuring 280mm in outer diameter, 190mm in inner diameter, and 2.5mm in thickness, this high-quality OEM disc ensures optimal performance and durability. It is designed for specific models within the McCormick CX, MC, MTX, X60, and X7000 series, Massey Ferguson 5400, 6400, 7400, and 8400 series, and Challenger MT500 and MT600 series, providing precise fitment and reliable operation.