Bosch Hammer Drill Bit Set HCBG04B25T 3 16 Inch BlueGranite Turbo 25 Pack Impact Rated Hex Shank Carbide Tipped Masonry Concrete Anchoring Tool Welding 66 mm Length) Handle Material 66 mm Length) Handle Material Metallurgy Drop Forged High Strength Aluminum Alloy Jaw Metallurgy Composition Induction Hardened Forged Alloy Steel Adjustment Mechanism Type High Speed 2 Start Threaded Knurled Nut Torque Performance Rating Exceeds Federal Torque Specifications by >140% Protective Surface Finish Corrosion Resistant Industrial Powder Coating Overall Catalog Weight 2 Steel Grip Power 50% Increased Gripping Power Measurement Type SAE Pro Tip: Use the steel tether point on the Shockforce tape as a makeshift compass max hole depth Working Head Face Material Carbide Tipped Four Grind Profile Matrix Kinetic Tool Compatibility Rating Yes (Impact Drivers and Rotary Hammer Drills) Target Application Substrates Poured Concrete retaining edge accuracy across long stone runs