Upgrade or repair your mower with the Universal 21-inch Mower Deck Premium Gator Blade. It is designed for various mowing methods and is suitable for mulching bagging and side discharge. Fits many 21 inch walk behind lawnmowers. An adapter kit is included making this lawn mower blade easy to install on a range of models. Raised teeth provide reliable and thorough mulching. 1.37 L x 2.5 W x 21 H and 1.8 lbs.