The John Deere LCA66039 is a genuine OEM Middle Knife Rotor designed for optimal performance in John Deere S-Series Combines (S760, S770, S780, S785, S790), 8000/9000 Series Forage Harvesters (8100, 8200, 8300, 8400, 8500, 8600, 8700, 8800, 9500, 9600, 9700, 9800, 9900), and W-Series Windrowers (W235, W260). This essential component ensures efficient cutting and processing, maintaining the high standards of John Deere machinery. With precise dimensions of 95 mm length, 51 mm width, and 51 mm height, and a weight of 0.12 kg, it guarantees a perfect fit and reliable operation.