Saipor 6pcs Combination Drill and Tap Bit Set(M3 M10) HSS 1/4" Hex Shank Metric Countersink for Wood, Plastic, Aluminum, Copper

[Drill & Tap in One] 6 sizes in one drill and tap bit set to meet your different needs. Metric sizes engraved on the bits: M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1, M8 x 1.25, M10 x 1.5 [Longer Service Life] Made of quality high speed steel with high durability and hardness. Quick change 1/4'' (6.35mm) hex shank [Self-centering Design] Do not need additional center drilling or center punching! Anti-wear: The back of the cone over the faucet to prevent excessive drilling caused by thread damage [Improve Working Efficiency] Wide spiral flutes carry the chips out of the hole. Drilling and tapping at the same time, save you time and effort! Suitable for drilling, tapping, cutting on wood, plastic, soft metal (eg aluminum plate, iron), Not for hard materials (eg steel sheet). Recommended for use on tapping machine, pay attention when using hand drills