- Made of high-speed steel, with strength and durability.
- Including all common size specifications of metal, wood, and plastic.
- The coating surface prevents rust, makes the twist drill bit more wear-resistant and has a longer service life.
- The end of shank is chamfered to allow easy and firm holding.
- Produce Name Round Shank Twist Drill Set
- Name: 100-piece twist drill bits set
Specification: 1-13mm
Material: M35
Color: roasted yellow
Packing size: 20*20*12cm
Weight: 5kg
Quick Change, Step Automatic Center Punch-