Impact rated drill bit with �? hex shank optimised for impact drivers. Titanium Nitride coating dispenses heat and makes the drill bit suitable for use also in high speed. QUAD EDGE� Tip: unique combination of 135� split point and four cutting edges: 135� split point allows for precise fast drilling start without walking. Four cutting edges create smaller chips to prevent heat build up for longer life. Variable flute geometry: For faster material ejection. Helps the bit run cooler and prevent it from burning out faster. Enhanced tapered web: Wider core towards the shank of the drill bit. Strengthens the core to increase overall flute durability.