Ryobi A981012 Combination Drill and Drive Bit Set (101-Piece) PLASTIC STORAGE: These bits are stored together in specially molded compartments for your convenience. The box locks shut, so you can lug this around with you on the job or in transit and not fear losing anything MULTIPLE SURFACES: You can use these bits on a variety of surfaces, from soft and hard woods to thin metals. You can even use these on masonry BLACK OXIDE DRILL BITS: These bits are covered in a black oxide coating that decreases friction and improves durability, giving you cleaner holes with less catching or wobbling INCLUDED BIT HEADS: Phillips, Slotted, Square, Hex, and Torx BIT HOLDER: Plug this extension into your drill / driver, and youll be able to attach these bits, and anything else with a standard hex shank, without having to activate the drill to open and close the collet