6pcs M3-M10 Combination Drill Tap Bit Set HSS Blue Nano Deburr Countersink Bits with Automatic Center Pin Punch

Specifications: 
Tap Material: High Speed Steel; 
Pin Punch Material: Brass; 
Color: Blue; 
Coating: Blue Nano; 
Combination Drill Tap Bit Size: M3/4/5/6/8/10; 
  
Features: 
1. Blue nano coating, more durable to use the titanium coated; 
2. Includes a center pin punch, easy to operate; 
3. Fits for power drill, screwdriver, impact screwdriver and wrench; 
4. Fits for drilling and tapping in metal, wood, stainless steel and so on. 
  
Package Includes: 
6 x Combination Drill Tap Bits; 
1 x Center Pin Punch