RYOBI introduces the 15-Piece Black Oxide Hex Shank Drill Bit Set. This assortment of drilling bits are perfect for a variety of materials including wood, metal, and plastic surfaces. The bits are constructed out of high speed steel with a black oxide finish to offer superior durability and 3X longer life. Another feature of these bits is the 135° split point to drill on contact and prevent your bit from walking. The 1/4" hex design provides secure grip into the drill chuck to prevent slipping of the bit. The 1/4" hex designs provides easy bit removal for quick changes between drill and drive bits. The compact case for easy bit access and mobility. This wide assortment, ranging from 1/16" to 1/2", guaranteeing a bit for all your project's needs. This set includes (2) 1/16" Black Oxide Drill Bit, (1) 5/64" Black Oxide Drill Bit, (1) 3/32" Black Oxide Drill Bit, (1) 7/64" Black Oxide Drill Bit, (2) 1/8" Black Oxide Drill Bit, (1) 9/64" Black Oxide Drill Bit, (1) 5/32" Black Oxide Drill Bit, (1) 3/16" Black Oxide Drill Bit, (1) 7/32" Black Oxide Drill Bit, (1) 1/4" Black Oxide Drill Bit, (1) 5/16" Black Oxide Drill Bit, (1) 3/8" Black Oxide Drill Bit, and (1) 1/2" Black Oxide Drill Bit