The Milwaukee Starlock Multi-Tool Blades are designed for quick blade changes for both OIS Multi-Tools and Starlock Multi-Tools. The Milwaukee 79mm Rasping Blade is ideal for coarse grinding, rasping and aggressive material removal over large surface areas. Specifications • Shank: Starlock • Material: Grout/Mortar Removal • Cutting Width: 79mm Features and Benefits • Suits both Starlock Oscillating Multi-Tools and other OIS Compatible Oscillating Multi-Tools • Black Oxide Coating Prevents Rust and Maintains Performance • Long Lasting Laser Etching For Quick Identification of Blade and Application • Ideal for coarse grinding, rasping or aggressive material removal over large surface areas • For removing thinset while replacing damaged tiles