Reduced Shank for sizes above 10mm and 3/8 to suit 10mm or 12.5mm drill chucks Titanium Nitride coating reduces heat and increases lubricity for extended life 118° Split Point 118° split point - Better for drilling into Pilot Holes 3 Flats on Shank - Prevents slippage in chuck Black/ Bright finish acids chip flow & heat dissipation Full length ground from a single piece of HSS - eliminates breakage