MATERIAL: Impact Tough HSS Drill Bit Set. Surface is coated with titanium or not for anti-oxidation and makes these cutters more durable.
SELF-CENTERING DESIGN: Self-centering point, do not need assistant center drilling or center punching. High hardness, rustproof, solid and durable.
TIME SAVER: Drilling and tapping in one, one-step processing, greatly save processing steps and time costs, improve working efficiency.
MULTIFUNCTIONAL: Suitable for drilling, tapping, cutting on soft metal, aluminum plate, iron, etc.
HIGH QUALITY: Fast replacement composite cone, uses drill edged principle. High hardness, rustproof, solid and durable. 100% brand new and high quality.