Precision Twist C29M40CO 29 Piece M40CO Bronze Cobalt Screw Machine Length Drill Set 135 Degree Split Point 099962

This Precision Twist C29M40CO short length drill bit set contains 29 cobalt steel drill bits, including inch sizes 1/16 Inch through 1/2 Inch in 1/64 Inch increments, with a gold oxide finish and a 135-degree split point for increased rigidity in heavy feed-rate drilling applications on hard ferrous materials. The cobalt steel provides extended tool life compared to high-speed steel drill bits and maintains the tool’s toughness and hardness even in high drilling temperatures. The gold oxide finish acts as a lubricant and provides wear resistance. Compared to standard drill bits, these tools have a thicker web for increased strength and rigidity. The self-centering 135-degree split point penetrates hard material without a pilot hole and produces smaller chips, which are less likely to clog a hole than a 118-degree point. These short length drill bits have a drilling depth of up to 2.5 times their diameter. The round shank accommodates most drill chucks. The set comes in a metal index case with labeled compartments for identification and organization. Drill bits conform to American National Standards Institute (ANSI) standards.