6 Packs High-Speed Steel Combination Drill & Taps Bit Set Three-Function Machine Screw M3/M4/M5/M6/M8/M10

●High quality material: Made of high quality steel with coating, high hardness, anti-rust, has excellent for capability and durability.This drill bits set can quickly drill, tap, deburr and countersink., ●Easy Use: Each tap drill is engraved with its size convenient for you to choose the suitable size with a glance. A tapered end on hex shank can prevent excessive knocks; Back taper exceeds the tap to prevent over-drilling and damage to the thread., ●Metric: M3, M4, M5, M6, M8, M10.fit Electric hand drill, impact drill, bench drill, electric screwdriver and other tap machines., ●Quick Change: 1/4 inch Hex Shank fits into all power tools more easily and securely, especially for locking into quick change chuck. Hex shank has a tapered end to prevent excessive knocks. Back taper exceeds the tap to prevent over-drilling