Features:
• HSS with heat treated • Titanium Nitride Coating • last up to 4-5 times than ordinary drill bits • Drill round holes in most metals, plastic, wood...etc • Drill round holes in most metals, plastic, wood...etc • Self-starting tip will not skid • No center punching Or pilot hole required • Compatible with all electric drills and drill presses • Hex Shank • 12 Hole sizes in 1/16" increments • Sizes: 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8"