uxcell Combination Drill and Tap Bit Set M3 M4 M5 M6 M8 M10 with 1/4" Hex Shank Bluing High Speed Steel Countersink Bit Spiral Flute Tapping Tool 6pcs

Drill and Tap Bits: Bit size: M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5. Can complete hole drilling, tapping, deburring and countersinking. One-step operation greatly saves processing steps and improves working efficiency., Quick Change: 1/4" (6.35mm) hex shank can be used on power tools more easily and securely. The shank has a tapered end. It exceeds the tap to prevent threads damage from over-drilling., Material & Coating: High-speed steel taps features high hardness, wear resistance and durability. Bluing process is for corrosion resistance, capability, and long service life., Wide Applications: Drill tap bits can drill or tap accurately on wood, plastic, copper, brass, aluminum, iron.(Note: not work well with high hardness metal.) Self-centering point, do not need assistant center drilling or center punching., Easy to Use: Suitable for most hand electric drills, cordless drills, impact drills and other tap machine. Drill tap bits are engraved with accurate sizes for easy identification.