Feature:1. INCISIVE DRILL BIT: These tools have a thin walled hollow design with a double alternating tooth geometry and are very incisive.2. HARD ALLOY MATERIAL: The drill bit is hard alloy, which provides excellent cutting performance, withstands high temperatures and maximizes durability.3. HIGH ACCURACY: The drill bit has multiple accuracy cutting edges for more accurate drilling without flanging and easier use.4. MAIN FUNCTION: This drill makes it easy to create cylindrical holes up to 50mm (1.4in) deep in ferrous and non ferrous metals.5. APPLICABLE RANGE: This hard alloy drill is suitable for open hole drilling work in cast iron, stainless steel, aluminum and copper.Specification:Item Type: Annular CutterMaterial: A0CR, hard alloyDrill Length: Approx. 95mm / 3.7in Depth of Opening: Approx. 50mm / 2in.Package List:1 x Annular Cutter1 x Storage Box