The RYOBI 20 in. Bagging Blade is the best solution for replacing your 40-Volt Brushless Mower's damaged or dull blade. While using this blade, it enhances your bagging experience by creating finer clippings, which take up less room in the bag. This function allows for more cutting and less time emptying clippings. This blade is optimized for cordless mowers, by improving cutting efficiency and increasing runtime. Buy with confidence knowing that this OEM part will work with the following RYOBI 20 in. mower models: RY401110, RY401120, RY40180 and RY40190.