This genuine MTD 07977358 lawn mower blade is specifically designed for Gutbrod models, ensuring optimal cutting performance and durability for your lawn. With a precise length of 520mm, it features a 10mm center hole and two 8.5mm outer holes spaced 65mm apart. This blade is a direct and reliable replacement for MTD part numbers 742-0738 and 742-0738A, ensuring a perfect fit and efficient operation for maintaining a pristine lawn.