Preset alternative tunings for tuning with one Pitch-Key PK-01 Guitar/Change touch!

This is an innovative part that can be placed between the nut and tuning post (peg) of your favorite string and allows you to instantly change the tuning. You can set another preset tuning for a specific string and instantly switch between them with the turn of the wheel. It is easy to install and remove, and there is no need to remove the strings or modify the guitar itself. For example, you can go from playing in regular tuning to drop D or drop C instantly by simply operating the Pitch-Key. Not only that, but by attaching one Pitch-Key to each string, you can lower the tuning or switch to capo tuning easily even on stage. "We want to have more of these gems on our guitars." -Thomas Nordegg (master guitar tech to Steve Vai)