Ingeniously simple - simply brilliant! Der Pitch-Key kann innerhalb von Sekunden zwischen dem Sattel und der Mechanik an einer Saite befestigt werden und ermöglicht den blitzschnellen Wechsel zwischen zwei verschiedenen Tuning Presets dieser Saite. This is done by a short twist on the knurled wheel. Example using the E6 string: normal tuning E -> alternative tuning drop D. Using a small adjusting screw, the fine tuning of the string takes place in the "up" and "down" position and thus also the choice of the interval. The Pitch-Key does not affect the sound of the guitar, it can be mounted without modification, even without removing the string in question, and just as easy to remove. The Pitch-Key is suitable for most electric guitars and western guitars. Of course, you can also use multiple pitch keys at the same time, opening up completely new possibilities for alternative tuning. Even if it can be very experimental. . . you get back to the standard mood extremely quickly. No hand tuning, no switching between two guitars. From now on, the Pitch-Key does this job. And so fast that you can change within a title, even within a riff, without much distraction! In conjunction with tremolos, make sure that they are adjusted so that they do not move when string tension changes. The Pitch-Key does not work with locking tremolos. String gauge from 009 to 068.