9pcs Countersink Thread Tap Drill Bits with Different Thread Diameter: M2, M2.5, M3, M4, M5, M6, M8, M10, M12
Made of high-speed steel 6542 with titanium coated for high hardness, wear and heat resistance, durable for long term.
Spiral Tap the crumbs into a spiral up chip evacuation, it is more suitable for the processing of blind holes and not easily broken tap.
Self-centering point, no need for assistant center drilling or center punching. Perfect for cutting and renewing external and internal threads to exacting standards.
Complete hole drilling, tapping, deburring and countersinking in one operation with a power drill, Suitable for drilling, tapping, cutting on soft metal, aluminum plate, iron, etc.