The Ammo stubby bit holder stores the bits on the side of your tool within easy reach, it also features a front magnet to hold hardware such as small screws. The Ammo magnetic bit holder includes the appropriate fixing to secure it to your compatible tool designed to fit, Bosch (M4 X 16mm), Dewalt (M3 x 14mm), Festool (M4 x 14mm), Hikoki (M4 x 16mm), Makita (M4 x 16mm), Milwaukee M18 (6.32 x ½) and M12 (M2.5 x 12mm).