Allparts LT-0868-000 The Key

I am one of those rare soles who changes tuning on their floyd equipped guitar a lot.
Since I purchased the guitar in 2014, I don't think I have kept a tuning consistent for more than three sets of strings.

BEFORE I purchased the Key, intonation was rather annoying to set up. You need to block off the trem and take off all the string tension before you open the saddle, then tune up, check and repeat until you are in the clear.

The key makes it so much easier. Sure, you still need to drop the tension when you insert the key, but once in and back up to tension you can keep the floyd floating, open the saddle, adjust, check, adjust etc until intonated. The trem stays floating, the tension stays.
Repeat for all the strings and you are done.

I would estimate it easily shaves a quarter to half of the time needed.

If forced for a NEGATIVE: No instructions in the pack. I had to watch a couple of videos to check I understood how to use the device correctly. (Ahem, I actually prefer this, as it produces less waste - I did say if I was *forced* for a negative =) )

Yes, intonation on a floating bridge can be a pain in the ***.
This piece should make the job a lot easier, unfortunately it did not.
I own an Original Floyd Rose and a Recessed Floyd Rose Original, alas with neither one it worked better than without "the key".
The idea is fantastic but it could've been manufactured better (maybe there is a german counterpart? :P). The little "clamps" that suppose to hook on the Floyd unit seem to be too narrow so when you screw it into place it visually moves down with the result that you "fine-tune" your string. So when you intonate to perfection and release the "the key", your string it slightly out of tune because you've been fine-tuning it while intonating.
Also, when screwing it in place, it gets more difficult to turn the knob when the tension increases and you cannot have low tension because it will flip off.
Conclusion : It did not do the job faster than when securing the bridge and intonate the old fashioned way and the piece should have been made a lot better like a good clean solid fit to the back of the floating unit.

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.