The 21" (533mm) High Lift Mower Blade is designed for use with the M18 FUEL™ 21" (533mm) Self-Propelled Dual Battery Lawn Mower (M18F2LM21). The steel blade provides maximum durability and life, while the precision machined cutting edge and optimised blade angle deliver users an improved cut quality. The optimised blade teeth of the High Lift Mower Blade shreds grass and debris into fine pieces for efficient mulching and bagging performance.