Product Name: Masonry Drill Bit High Helix Chrome Plated Model NO.: MD-003 Usage: Masonry Drilling Material: High Carbon Steel Type: Twist Drill Bit Customized: Non-Customized Trademark: FANXI Transport Package: Hanging Bag, PVC Bag, Blister, Plastic Tube etc. Specification: DIN8039 Origin: P. R. China HS Code: 8207509000 Product Description High helix Masonry Drill Bits Chrome PlatedMade of high carbon steel with industrial grade carbide tip for long life and efficient drilling.Milled high helix for quick, easy debris removal.Hardened core for extra strength and reduced breakage.For use with percussion drills.High helix, 118-degree point. Engineered with higher helix for drilling in hard concrete, aggregates and similar materials.Surface treatment are available: Galvanized finish, Nickel Plated, Chrome coated, Sandblasted finish.From size 12mm or 1/2" use reduced shank.Drill set are available.