Irwin 30520 Left Hand Cobalt 5/64-Inch to 19/64-Inch Cobalt Twist Drill Bit

Drill Bit Set, 5 Piece, Cobalt, Left Hand, 5/64″ to 19/64″, in Plastic Case IRWIN offers a complete line of Metal Twist Drill Bits, including Black Oxide, Turbo Point, Titanium Nitride, and Cobalt Drill Bits.. Ideal for drilling into hardened steel, alloys, titanium and stainless steel. Constructed of M-42 8 percent cobalt high speed steel for super abrasive resistance in tough metals. Heavy duty spiral flute design produces faster chip ejection. Shorter cutting lips reduce torque for drilling in high tensile strength materials.. 135-degree split point reduces feed pressure for easier penetration without work hardening. Ideal for use with screw extractors. Pre-drill for extractors. 5/64″, 7/64″, 5/32″, 1/4″ & 19/64″.