The Bosch TCHC9 Universal Concrete Screw Install Kit is an universal solution, so if you use a rotary drill or SDS-plus® hammer you'll have the right bit with you. Packaged in a slim reusable tube, this easy-to-carry kit is compact and helps ensure you have the right bit for the job and the tool. It features bits for use with setting masonry screws. It includes SDS-plus® hex drive bits, power bits, hex sockets, drill bits, drive sleeve, hex key and bit holder. It has a 1/4 In. hex shoulder for a drive sleeve used to set masonry screws. The bits deliver fast drilling and enhanced durability. These jobsite-proven bits are 15% faster than standard rotary hammer bits, and they feature Bosch-made carbide for long life. The centric conical tip guides the bit through concrete, while enhanced flute design aggressively pulls dust away from the work, for fast drilling and longer bit life.