Features: 18cm long, suitable for 6-string folk guitars, classical guitars, electric guitars. A great assistant tool for guitar player. Can help eliminate overtones and resonances, and reduce unwanted string noise, you can practice guitar better while not disturbing other people. Easy to install and remove, you can adjust the strap to fine-tune your dampener pressure and slide it to guitar head when not in use. Made of soft cotton material, won't caused any scratches to your guitar, safe and reliable to use. Black color with special white pattern, very eye-catching, can be an excellent decoration for your guitar. Specifications: Style: SM-33/SM-34/SM-35/SM-36 (optional) Item Length: 18cm/ 7.1in Package List: 1 * String Mute