【MATERIAL】-This twist drill bit was made by High Speed Steel and the hardness HRC is 62~63 which is harder and tougher to extreme loads,not easy to break
【ADVANTAGE】- Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
【FEATURE】-Round shanks allow use with a wide variety of toolholding systems
【APPLICATIONS】-For use in a wide range of aluminum alloy, iron, copper, brass and metal materials
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