Compatible Bridge Mounting Master Kit for Gibson Guitars with USA/ABR-1 These kits are for Gibson guitars from 2017 to date with the ABR-1 bridge and bushing mounted bridge posts. In order to mount the Tone-Lock™ bridge included in all Master Kits, compatible Faber® conversion bridge posts are required. See the merits of the available conversion posts below. All Faber® Master Kits are completely ready to totally transform the tone of your guitar. All necessary parts and accessories are included. Specifications of Color, Saddles and Installation Methods are all YOURS to decide on. The first step in selecting a Master Kit is choosing YOUR installation option Master Kit "EZ" USA/ABR-1 The Master Kit "EZ" USA/ABR-1 is designed to be installed with absolutely no tools or special skills needed. Simply remove your existing bridge, bridge posts, and tailpiece, and replace with your new Faber® Premium Hardware. Start Customizing Your Master Kit "EZ" Master Kit "PLUS" ABR-1 The "Plus" Kit adds even more tone and sustain by including superior Faber® Premium Combination Bridge Studs/Posts with separate thumb wheels. Replacement of your current bridge mounts is simple and requires no special skills or tools. Start Customizing Your Master Kit "PLUS"