Features: 1. The head is of the special process technology, high hardness and small incision resistance 2. High efficiency spiral, smooth and flat which make it smoother to drill 3. The design of triangular handle make it more fastening to clamp and not easy to slip. 4. Widely used in ceramic tile, glass, brick wall, wood, etc. 5. Can be used in the hand electric drill, table drill, etc. Specification: Condition: 100% New Material: Hard Alloy Tool Holder Type: Triangle Handle Cooling Type: Outer Cold blade top Corner: 45 Category: Hole Expansion Drill Weight: Approx. 204g / 7.2oz Handle Diameter: 4.5-9mm Chip Groove Length: 50mm Blade Diameter: 6-12mm Blade Length: 100-120mm Package List: 5Pcs Drills Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.