The Chapman Model 2307 8-Piece Metric Hex Bit Set consists of a Chapman ratchet and seven common small metric hex bits. With so many different types of screws on handgun grips, pocket knife clips, and scope rings its a good idea to have all your bases covered. The Chapman 2307 8-Piece Metric Hex Bit set will help you do that. Chapman drive bits are constructed of the highest quality Chrome Nickel Molybdenum Alloy Steel and precision made to ensure a proper fit. They feature knurled Spinner Tops which allow for quick finger tightening of threads and for instant "push down" removal of the adapter from the ratchet. Kit Includes:1.5mm adapter2.0mm adapter2.5mm adapter3.0mm adapter4.0mm adapter5.0mm adapter6.0mm adapter