10 Piece, Titanium Drill Bit Set, Includes 1/8", 9/64", 5/32", 11/64", 3/16", 7/32", 1/4", 5/16" & 3/8" Drill Bits, Titanium Coating For Up To 3X Life Versus Black Oxide, Shockwave Impact Duty, Engineered For Drills & Impacts, Red Helix Design For Rapid Chip Removal, 135 Degree Split Point For Precision Start No Walking.