Specifications:Bit Size: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1, M8 x 1.25, M10 x 1.5Hex Shank Size: 1/4" (6.35mm)Flute Length: 19mm / 0.75", 21mm / 0.83", 24mm / 0.94", 26mm / 1.02", 32mm / 1.26", 34mm / 1.34"Overall Length: 66mm / 2.6", 67mm / 2.64", 67.5mm / 2.66", 68mm / 2.68", 69mm / 2.72", 70.5mm / 2.78"Material: High-speed Steel 4341Surface Treatment: Vacuum Titanium CoatedDescriptions:1. Combination drill and tap bit set can complete hole drilling, tapping, deburring and countersinking. One-step operation greatly saves processing steps and improves working efficiency.2. Quick Change 1/4 inch 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.3. High-speed steel taps features high hardness and toughness. Vacuum titanium plating is for capability, wear-resistance, and long service life.4. Drill tap bits can drill or tap accurately on wood, plastic, copper, brass, aluminum, iron. Self-centering point, do not need assistant center drilling or center punching.5. Suitable for most hand electric drills, cordless drills, impact drills and other tap machine. Note: not work well with high hardness metal. Drill tap bits are engraved with accurate sizes for easy identification.Package Included:6pcs x Combination Drill and Tap Bits
