EDGER BLADE 9" X 9" Original Equipment 981-0748 and 781-0748 Genuine Factory Parts blades are designed and rigorously tested to maximize safety and performance. These blades are the only blades engineered to the original equipment's exact specifications. Manufactured using 10B38 Steel and to a 42 Rockwell Hardness rating, these blades meet American National Standards Institute requirements for safety. To protect your investment, only use Genuine Factory Parts blades. Fits Edgers that Require a 9 in. Blade with 5/8 in. Center Hole. Fits Troy-Bilt, Bolens, Huskee, MTD, Yard Machines and Yard-Man Edgers. Contents include one 9 in. x 9 in. tri-arc edger blade with a 5/8 in. center hole pattern. Factory tested and approved to provide the perfect fit, strength, durability and performance.