21-Piece Titanium-Coated Drill Bit Set is great for drilling plastic, wood or metal. Sizes included are: 1/16-inch, 3/32-inch, 1/8-inch, 5/32-inch, 3/16-inch, 7/32-inch, 1/4-inch, 9/32-inch, 5/16-inch, 11/32-inch, 5/64-inch, 7/64-inch, 9/64-inch, 11/64-inch, 13/64-inch, 15/64-inch, 17/64-inch, 19/64-inch, 21/64-inch, 23/64-inch and 3/8-inch Features: Assorted titanium-coated bits, sized from 1/16-inch to 3/8-inch Handy storage case.