Handy tool for safely carrying and storing 12 small drill bits, ranging from 1.6mm to 0.6mm (included). Front of vise will secure selected bit by twisting the cap. Drill bits are stored in the back end of the pin vise and kept in place by a small powerful magnet. Just twist and remove the back cap for easily access of the bits. Magnet can also be useful to retrieve small metal objects that fell in hard to reach places.