2 1/2" overall. Brass finish steel construction. Shank can be custom ground to match your door lock. Multi-function tool has slot which can be attached to keyring. Features integrated hex wrench slots and a fully functional 1/4" hex bit driver that will take any standard sized bits, making it possible to do many repairs on the go without a full sized screwdriver. Axe tip can be used as a box opener. Axe blade functions as a scraper. Hook below the blade is a bottle/cap opener. Bulk packed.