Professional Drill Bits - Made of 5% Cobalt High Speed Steel with heat treament and hardness up to HRC 67, Ideal for drilling in cast iron, stainless steel, hard metal, copper and so on Superior Performance - Provides upgraded M35 Cobalt drill bits for high-temperature applications for extended periods of time and delivers 5x life vs. Standard bits Drilling a Precise Hole - 135 degree pilot point tip design to help reduce walking, Straight round shank design with better concentricity for precise drilling results Efficient - Tapered web helix design provides additional stability in tough applications, Large spiral flute facilitate the export of metal chips remove for fast drilling results Instructions for use: Due to the large diameter of the drill, it is need to pre-drill small hole for best results. Drill bit is a consumable item, it will not be sharp enough with prolonged use, you can be to sharped it for continue use MECCION continues to design and optimize professional jobsite solutions - tools, accessories and service - to ensure absolute confidence for the toughest conditions. We aim to make the best value products to live a more convenient and secure lifestyle. We have a professional products monitoring team focusing on all the details. From our proven performance to our focus on innovation and technology. The result is products we can stand behind.

Meccion Cobalt High Speed Steel Blacksmith Drill Bit
The Cobalt drill bits are engineered and given the capacity to cut through most types of metal, including alloy steel, stainless steel and cast iron and even hard plastics and woods.
These hardened drill bits are made of high speed steel M35, which makes them strong and give them the ability to withstand long time use.

Product Features:
- 135 Degree Point Angle
- 5% cobalt Contain
- Hardness up to HRC67
- Multi-process precision ground
- Fast drilling and chip removal
- Create clean and precise holes
- Working on most hard material
- Straight round shank compatible with most drill devices

Attention:
1. You need to control the RPM when drilling.
2. Do not hit the drill bit, otherwise it will be break.
3. Fixed well to avoid the drill bit breaking due to vibration.
4. If the chip remove is abnormal, please stop drilling immediately and continue after remove.
5. When drilling for a long time, please use cutting oil for cooling to prolong the service life.
6. The drill bit is a consumable item, and it will not be sharp enough with prolonged use, and it can be continue to used by grinding.7. Due to the large diameter of the drill, it is need to pre-drill the holes with a smaller diameter drill and then reaming the holes with a larger diameter drill for best results.