OREGON 794-322 - You can count on Oregon lawn mower blades to be the best in the industry. Oregon replacement lawn mower blades are made to the exact OEM specification for optimum performance. Our 26 quality standards ensure that you’re buying a sharp, high-performance blade that mounts properly and delivers a clean cut for quality results. Our blades are individually straightened and hardened to provide a consistent, cleaner cut and increase blade longevity. Blade Application Details: --22" walk behind. --Center hole: 7/16". --Major brand replacement: Toro, MTD. Oregon Mower Blades - Cut grass with precision, speed, and efficiency. Our replacement mower blades are engineered to outperform standard blades and fit like the original equipment manufacturer's blade. Oregon replacement mower blades can help manage any environment. Oregon is the world leader in chainsaw guide-bars and also produces replacement mower blades, belts, and several other aftermarket replacement parts for power equipment. It brands bars for many major chainsaw manufacturers and sells Oregon-brand in the replacement market worldwide.