Set of 6 combination taps with integrated bore, made of high-speed steel (HSS), sizes M3 to M10, hexagonal shank, for precise threading on metals

GOOD DRILLING PRODUCT - These tap drills are suitable for drilling wood, plastic, thin copper, aluminum, and other soft metals (5-6 mm). They are used on a tapping machine, such as a lathe. Caution: These tap drills are not for hard materials (e.g., sheet steel). SUITABLE - These tap drills are used for drilling, tapping, and cutting soft metal (5-6 mm), aluminum sheet (5-6 mm), iron, etc. They are also used on a tapping machine, such as a lathe. SELF-CENTERING POINT - No need for center drilling or center punching. Anti-wear: The cone-shaped back of the tap prevents over-drilling caused by thread damage. MORE EFFICIENT - Drilling and tapping in one step. Quickly save processing steps and time costs, improving work efficiency. These HSS tap drills are excellent tools used for creating screw threads, cutting, or forming the female part of couplings. HIGH QUALITY - These tap drills are made from high-speed steel and finished with nitriding for high hardness and rust resistance.