Forged steel guard, two-prong smooth double heat treat, special Boron steel. For all windrowers 1970 & up. Replaces 748178, 748178H, 049327H, 049239, 049270, 049270H. (Optional for 748189, 049239, 049270). Replaces New Holland: 219190, 219191H, 65327, 695501H, 858778, 858778H, 86521587H, 87042356H, 86553340H. Massey Ferguson: Mower Conditioners: 725, 925. Swathers: 775 (table s/n 2734107410 & up), 885. Buchanan BU215BH. Replaces 683994M1, 683994M1H, 683181M1H. Hesston 748178, Massey Ferguson 683994M1, and New Holland 219191.