The website says, "Retrofits Gotoh GB7 tuning machines. Fits many Ibanez, Yamaha, Epiphone, Peavey, Modulus, Schecter, and Warwick bass guitars."
I put it on my Warwick Thumb and it mounted fine, but I didn't have much luck with tuning stability. I couldn't get it to drop it down to correct D pitch and come back up to correct E consistently. It might have something to do with the way the Warwick tuners are angled. The lever came into contact, or came extremely close to the G-string tuner because of the way the tuners are angled on that bass. (You know how those Germans are with their attention to detail. Believe me, there is planty of it in my blood.)
Send me your address, and I will get it in the mail!
