Martin Guitars, String Action Gauge 7-string Strapped with an onboard preamp

Strapped with an onboard preamp and tuner

Metal Chassis Receiver

One GruvGlide kit will treat 150 records and contains one can of GruvGlide formula

5"-radius scalloped maple or rosewood fingerboard with brass nut and 21 "super jumbo" frets

1 × Cold Shoe Mount Adapter

Martin Guitars, String Action Gauge 7-string Strapped with an onboard preampFrom the leaders in world class acoustic tone comes a must have tool for maintaining proper setup. For use on all stringed instruments. Setup Like the Pros Standard & Metric Measurements All Stringed Instruments Suggested 12th fret action (can go lower if no buzzing is present). Bass Side Treble Side ACOUSTIC 3 32 (2. 4mm) 2 32 (1. 6mm) BASS NYLON 4 32 (3. 2mm) 3 32 (2. 4mm) CLASSICAL 5 32 (4. 0mm) 4 32 (3. 2mm) UKULELE 5 64 (2. 0mm) 5 64 (2. 0mm)