Guitar Soundhole Block Feedback Buster Stop

Anti-feedback cabochon Fire & Stone "Stop" plug / cover for electro-acoustic "Folk" guitar diameter: 102mm (for rosettes with diameter 99-103mm) Acoustic Guitar Rosace Cover Feedback Buster Reducer diameter 102mm for Guitar Soundhole diameter 99-103mm great for Live performanceEliminate feedback and improve your volume on stage - Simple and quick installation and disassembly: Just place the cabochon inside the rosette. Harmless soft rubber insert for the finish of your guitar, tapered profile to fit as many guitars as possible Requires no modification to the instrument