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

HAN30520 Features: -Heavy duty spiral flute design produces faster chip ejection.-Shorter cutting tip reduces 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 Sizes: 5/64", 7/64", 5/32", 1/4" and 19/64".  .-5 Piece Cobalt Left Hand Mechanics Length Cobalt High Speed Steel Drill Bit Set. Construction: -Constructed of M-42 8 percent cobalt high speed steel for super abrasive resistance in tough metals. Warranty: -Lifetime warranty does not cover abuse.