Join Date: Dec 2000
Location: Toronto, Ontario, Canada
Re: Allen wrenches stored on back of headstock
It's a Gotoh piece, in fact, made to be companion to their bridge systems and their various metric hex keys needed to unlock and adjust.
The only down-side to some who don't prefer it is the required 2 small screw holes into the back of the headstock.
One of my nifty little accomplishments was to come up with a way of using these (really like having those onboard each instrument, truth told) without having to put any holes in the headstock. (I think I posted a picture years ago, but I believe it was hosted on a now-defunct web service...)
I just wish I'd come up with that before putting a couple of those directly to the headstocks, as above =]