Amazing tool that leaves the wrenches only for the museum.
Great functionality for almost all tightening tasks. Perfect fit on the nut or screw head, thus providing a very positive grip.
With 2 sizes, one can cover a full range of German sizes.
Okay, if someone wants it to tighten bolt knots, it doesn't work.
Impeccable construction quality, you enjoy looking at it.

Perfect tool. It's like having a collection of German keys in your pocket and more. It can be used for many other tasks besides unscrewing screws. Its size of just 125mm makes it very convenient and useful on a daily basis.