Drill Bits Drill America 12 In. L High Speed Steel Aircraft Extension Drill Bit Set (5-Piece)

Drill America High Speed Steel Aircraft Extension Drills are good for most general purpose applications. These drill bits offer a combination of hardness and toughness for wear resistance. Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge. Extra-long for when extra reach is required.

• Sizes included are 1/4 in., 5/16 in., 3/8 in., 7/17 in. and 1/2 in. with overall length of 12 in.
• High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
• Have a black oxide surface treatment that is abrasion resistant, reduces chip welding and improves chip flow
• 135° split point is self-centering and reduces thrust
• Manufactured to National Aerospace Standard 907
• Drill America aircraft extension drills are available in 6 in. and 12 in. overall lengths when extra reach is required

 WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov