The Genuine Factory Parts 9" X 9" Tri-Arc Edger Blade helps you properly define the border between your lawn and mulched garden beds. Edging can save you trimming time and provide a barrier that helps prevents grass from entering flowerbeds. Genuine Factory Part blades are original equipment blades for CRAFTSMAN, Cub Cadet and TROY-BILT. Designed for precise fit and optimal performance, you can have confidence that they are going to provide you the cutting performance you need and expect from your walk behind mower.