6 Pack 1/2" Premium High Performance "TiN" Coated High Speed Steel Drill Bits 5/16" and 3/8" high speed

5/16" and 3/8" high speed steel

5" OAL and 1/8" ShankCoated with our proprietary "F55" coating for extreme hardness and lubricity for longer tool life

Drill Bit Coating:      "TiN" specifically for aluminum

3/8" 3 Flute

As with all our tools we have taken the time to design each and every tool to meet and exceed customer expectations

6 Pack 1/2" Premium High Performance "TiN" Coated High Speed Steel Drill Bits 5/16" and 3/8" high speedWhat is "TiN" Coating? Learn More! 6 Pack 1 4" "TiN" Coated High Speed Steel Drill Bit, 135 Deg Split Point, HSS, The Best High Performance drill bit for AR15 AR10 . 308 Lower Receiver Jigs. Drill bits were designed specifically for drilling aluminum.