Drill Bit Size Inch 11532 Shank Taper Designation MT4 Drill Point Angle Degrees 118 Drill Bit Material High Speed Steel Drill Bit FinishCoating Black Oxide Overall Length Inch 1478 Through Coolant Yes Oil Hole Drills feature coolant passages throughout the length of the body These allow a coolant air, oil or vapour mist to reach the cutting edges The resulting flow cools and lubricates the cutting edges and also aids in the extraction of chips Standard length 118Deg notched point High speed steel