(12) Replacement 18"X5/8" Notched Lawn Mower Blade Fits Multiple Makes & ModelsTwelve (12) New Aftermarket Replacement 18" X 5 8" Notched Blades Fits Ariens: Requires 3 for 50" cut Fits Bobcat Ransomes: Requires 2 for 36" cut; 3 for 54" cut Fits Bunton Goodall: Requires 2 for 36" cut; 3 for 52" cut Fits Encore: Requires 2 for 36" cut; 3 for 52" cut Fits Exmark: Requires 2 for 36" cut; 3 for 52" cut Fits Ferris: Requires 2 for 36" cut; 3 for 52" cut Fits Giant Vac: Requires 2 for 36" cut; 3 for 52" cut Fits Gravely: Requires 2