Features: * Electroplate diamond – long life and holds up to hardened material such as carbide and cobalt * 180-grit wheel replaces Drill Doctor models 350X, 500X and 750X * Sharpens high-speed steel, Carbide, TiN-coated, and masonry bits * Easy installation * Provides for an additional 300 to 400 sharpening to all Drill Doctor models * The diamond material is tough, long lasting, and adds precision to the sharpening process What"s In The Box: * Drill Doctor SA01326GA Diamond Grinding Wheel