I bought "The Key" for my Ibanez RG760 (this tool works only for Floyd Rose bridges) to try to set correctly its intonation. I watched a couple of youtube videos (before buying it) on how to use it and it really seemed like a piece of cake. Well it wasn't! Although it's easy to mount it on the saddle, it becomes really stiff when mounted and thus it's difficult to rotate it. At the end I managed to improve the intonation of my guitar (still not perfect) but it took me a lot more than the 5 minutes that some guys advertised on youtube. Maybe it was due to my inexperience. Anyway, I think this tool is overall useful since setting up the intonation of a Floyd Rose is simple impossible without it. Without it, it would take two people, one holding the saddle in its place after unscrewing it and another to adjust the tension.
I took a bit of a chance when I ordered this since the fine tuning screws on my Peavey FR copy sits in an angle and it did not fit as it would on an FR system with the fine tuners sitting flat. I had to modify the "fork" to make it fit behind the angled fine tuners wich made it unstable and fiddly to use. If you have a floyd with fine tuners that sits in a straight angle it´s probably an excellent tool but if they are angled it won´t work as intended.
* Ceny zawierają podatek VAT. Do ceny artykułu(ów) należy doliczyć koszty wysyłki. Oferty ważne do wyczerpania zapasów. Za błędy w opisie i innego rodzaju pomyłki nie ponosimy odpowiedzialności. CK=Cena katalogowa produktu