General description These CCYKXA 6pcs Tap Drill Bit Set is designed for efficient drilling and tapping in soft materials. Ideal for wood, plastic, thin copper, aluminum, and other soft metals (5-6mm), these bits are perfect for creating screw threads and forming the female part of the mating pair. They are not suitable for hard materials such as steel sheet. Technical specifications Material: High-speed steel (HSS) Coating: Titanium Size range: M3-M10 Hexagon shank: 1/4 inch Usage Drilling and tapping in one step Suitable for soft metals, aluminum plates, and iron Can be used on machines like lathes for tapping Other information Self-centering point eliminates the need for center drilling or punching Anti-wear design to prevent over-drilling and thread damage Surface finished by nitriding for high hardness and rust resistance