PRODUCT DESCRIPTION You can count on the Oregon 91-398 replacement lawn mower blade to be the best in the industry. Our 26 quality standards ensure that you’re buying a sharp, high-performance blade that mounts properly. It delivers a clean cut for quality results. FROM THE MANUFACTURER Oregon is a world leader in mower blade manufacturing. Blades are made to a 26 point quality checklist that insures our blades meet exacting standards and give you a great looking lawn. We offer blades to fit many brands of walk behind and riding mowers.