A few large, 111mm Swiss Army knives include a long, narrow Phillips head screwdriver. You can use this tool to work on screws that would be inaccessible with the shorter, broader phillips screwdriver bit that is found on many other Swiss Army knives.
Uses: The narrow Phillips screwdriver locks in the fully open
position, which makes it much easier to use.
If you have a screw that is very difficult to turn, you can grip this screwdriver blade with an
adjustable wrench or pliers to get more torque-- something that is not possible with a round blade.