Boston acoustic guitar soundhole mute 110mm diameter AGM-110

Boston acoustic guitar soundhole mute 110mm diameter 

The Boston AGM-110 is designed for acoustic and classic guitars with a pickup.
When you go on stage with your guitar you often get annoying feedback and then the AGM-110 comes in handy.
It is easy to assemble and remove and fits into any classic guitar soundhole with a diameter of 110mm.