The Screeching Halt has a diameter of approximately 4 inches at its widest and tapers about .100".SCREECHING HALT SOUND HOLE PLUGFeedback ReducerPW-SH-01The D'Addario Screeching Halt Soundhole Plug allows you to play your electric acoustic at far greater volume, without unwanted feedback or howling. The tapered design allows for a great fit in most Soundholes, while the inert material is safe for your guitar’s finish. Simply place the Screeching Halt into your acoustics' Soundhole and enjoy a feedback-free performance.IDEAL FOR: LIVE PERFORMANCE
