The John Deere M159046 is an original equipment manufacturer (OEM) mulching mower blade designed for a wide range of John Deere lawn tractors and ZTrak mowers. This high-quality blade provides superior cutting performance and efficient mulching, returning finely cut grass clippings to the lawn as natural fertilizer. With a length of 520 mm, a width of 63.5 mm, and a thickness of 4 mm, it is engineered for durability and a precise fit. It features a 17.5 mm center hole and 10 mm outer holes with a 63.5 mm center distance. This blade is compatible with various 42-inch, 48-inch, and 54-inch mower decks on models including the X300, X500, D, E, L, LA, and ZTrak series.