Milwaukee 21" Mower Blade is designed to be compatible with the M18 FUEL™ 21" Self-Propelled Dual Battery Mower, making it an i for the blade included with the mower kit. Crafted from durable steel, this mower blade long-lasting performance and reliability. It is precision-machined to ensure superior cutting quality, helping you achieve a clean and efficient mowing experience every time. Model Number: 49-16-2734