The Ego High-Performance Blade Set for the 22 in. Aluminum Deck Mower optimizes the powerful torque and fast blade speeds of the aluminum deck mower to deliver superior performance and a sharp, clean cut. The Upper Blade is the second lawn mower blade of the Select Cut multi-blade system and is also included in this set. The lower High-Performance Blade is interchangeable with a High-Lift Bagging Blade (available separately) to customize your cut. The High-Performance Blade is designed for exclusive use with the Power+ 22 in. Aluminum Deck Select Cut Self-Propelled Lawn Mower (Lm2200Sp, Lm2206Sp_. Genuine Ego parts are designed specifically for your Power+ tools to ensure compatibility, quality, and performance (nuts and bolts not included).