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6 Pack 5/16" Premium High Performance "TiN" Coated High Speed Steel Drill Bits
What is "TiN" Coating? Learn More!
6 Pack 5/16" "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.