Genuine Toro Atomic mulching blade, 52 cm (20.5″) long. The toothed profile (often called a gator blade) is the one to spec when you want clippings chopped finer and left in the turf. Fits the Groundsmaster 3200, 3300, 3280-D, 360, 7200 and 7210. Confirm model and serial number before ordering.