10 Piece, Titanium, Impact Drill Bit Set, Patented Web Taper Increases The Rigidity Of The Bit To Decrease The Potential For Bit Breakage, Patented Pilot Point Tip 3/16" To 1/2" Allows Users To Drill Holes Faster Than The Conventional Split Point Product & Offers Clean Burr Free Holes With Reduced Bit Walking, Product Is Designed To Be Used In A 1/4" Hex Shank Impact Drivers To Drill Holes In Metal, Wood Or Plastic, Set Consists Of: 1 Each Of The Following Drill Bits: 9/64", 5/32", 11/64, 3/16", 7/32", 1/4", 5/16", 3/8", (2) 1/8" Drill Bits & Case.