RYOBI 20 in. Replacement Blade is the best solution for replacing your 40-Volt Brushless Mower's damaged or dull blade. This blade is optimized for cordless, improving its cutting efficiency and increasing its runtime. Buy with confidence knowing that this OEM part will work with your RYOBI 20 in. 40-Volt Brushless Mower. Replacement part for: RY401110, RY401120, RY40180, and RY40190.