5Pcs M3-M8 Spiral Thread Screw Tap Drill Blue Nano Coated Machine Tap Metric Drill Bit Set

Specifications: 
Type: Spiral flutes; 
Material: High Speed Steel; 
Coating: Nano Blue Coating; 
Size Including: M8 x 1.25mm / M6 x 1.0mm / M5 x 0.8mm / M4 x 0.7mm / M3 x 0.5mm. 
  
Features: 
- Made of high speed steel material, durable to use; 
- Spiral screw is suitable for cutting high toughness material; 
- Easy to drill the bottom; 
- 5 different sizes to meet your different needs; 
- Spiral groove is conducive to remove crumbs, not easily broken tap. 
  
Package Included: 
5Pcs x Screw Tap