Features:

•  1/4" Hex Shank , Triangular shank design will not spin inside the chuck
•  HSS with heat treated
•  Desinged to auto deburr the hole cut.
•  Titanium Nitride Coating
•  last up to 4-5 times than ordinary drill bits
•  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
•  Sizes: 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", & 1"