The RYOBI 20 in. Replacement Blade is designed specifically for 40-Volt 20 in. HP Brushless Lawn Mowers. Made by the trusted brand Ryobi, this lawn mower blade is a reliable and high-quality option for maintaining your yard and garden. With a model number of AC04029, this replacement blade ensures a precise fit and optimal performance for your lawn mower. Perfect for keeping your lawn looking its best, this blade is a must-have for any home gardener or landscaper.