ST-MGA-B Faber 4mm metric, '59 ABR Brass! Studs and Brass! Thumbwheel Kit, (pair) gold plated, aged
4mm, '59 ABR Studs and Thumbwheel Kit (pair) GERMAN BELL BRASS, nickel plated, aged.
For those desiring a more simple installation and enhancing the resonance and sustain of your guitar, consider our FABER iNsert.