D2139 21-Piece Set of Cobalt Alloy Drill Bits 1/16"¬–3/8"

The premium bits in the D2139 21-Piece Set of Cobalt Alloy Drill Bits are engineered to handle high tensile steels and hard-to-machine alloys and are typically used in aerospace applications.

Cobalt alloy bits also retain their edge sharpness longer than high-speed steel bits (HSS), resulting in a significant saving of time and money in the workshop.

The 135° split point enables the drill to use less thrust and eliminates the tendency of the drill point to walk, which makes it great for use in portable drills or drill presses.

These are jobber length bits, meaning they are great general-purpose, straight-shank drill bits.

135° split point bit sizes are: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", and 3/8".

Includes a heavy-gauge steel index case for storing.

The D2139 comes with a 1-year warranty assuring the set is free from factory defects.

The Woodstock Customer Service and Technical Support Teams are U.S. based.