All Pro Sustainer System™ parts can now be ordered in one convenient "Master Kit," at approximately 5% discount over buying the parts separately. The "Tone-Lock"™ MASTER KIT includes "Tone-Lock"™ studs and spacers, a TP-59 tailpiece and a "Tone-Lock"™ Bridge. This is the kit to buy to completely upgrade your ABR-1 equipped guitar (i.e., Gibson Historic and any guitars using ABR-1 style 6-32 threaded bridge posts) or 4mm bridges posts (i.e., non-USA made imports, such as Tokai). NOTES:Nashville equipped guitars will require Faber® BSWKIT or NSWKIT (not included) to install the Tone-Lock™ bridge. Bacchus Classic Series LP uses non standard threads on bridge posts and require the BSWKIT to use the locking collars. Please review the Faber® Guitar Parts F.A.Q. to see which product is right for your guitar. NEW!Now avaliable with TITANIUM saddles!!!