The Arnold Deluxe 21" 22" 23" Universal Fit Dethatching Lawn Mower Blade 490-100-0083 is a high-quality steel blade designed for gas-powered walk behind mowers. With a length of 21 inches and a universal fit for 21", 22", and 23" mowers, this blade is compatible with Arnold brand mowers. It is easy to install and durable, ensuring efficient and reliable performance in your lawn care tasks. Made in the United States, this blade is a reliable and essential part for maintaining your yard and garden.