Tight screws are no match for the Ratchet Driver. It lets you turn screws with more torque without changing your grip. The magnetic tip holds the bit in place and the ratchet has three directions: forward, reverse, and fixed. And the magnet holds the bit in place. It works with any Leatherman tool that has a large bit driver. The Ratchet Driver fits in your pocket and is easy to carry anywhere. This product is backed by a 2-year warranty.