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: UncoatedColor: Silver ToneDescriptions: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, wear resistance and durability. Features just the base substrate without any additional coatings, good for wide ranges of applications.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
