Performance Tool W9017 Drill Bit Set with Steel Case Titanium Coated, 29-Piece 29-Piece Titanium-Coated Drill Bit Set with Steel Case includes assorted bit sizes, all high-speed steel and coated with titanium nitride to extend the life of the bit High speed steel for general purpose drilling applications Great for drilling metal, plastic or wood Includes bit Sizes 9/32, 17/64, 1/4, 15/64, 7/32, 13/64, 3/16, 11/64, 5/32, 9/64, 1/8, 7/64, 3/32, 5/64, and 1/16-Inch Includes bit sizes: 13/32, 25/64, 3/8, 23/64, 11/32, 21/64, 5/16, 19/64, 1/2, 31/64, 15/32, 29/64, 7/16, and 27/64 -Inch.