For A 4-6 String Guitar Or Bass, Use The Tuoren 3Pack Guitar Mute Dampener Set Description: Guitar Bass Fretboard Fingerboard Wrap String Mute Silencer Damper The elastic cotton material will not hurt your neck or fingerboard. Hook Loop Strips is used to adjust and fix the length of the muffler band. Reduce other interfering sounds during performance. (The mute can not absorb all the sound.) Fit for: 6-string guitar and 4-string bass Size Chart: Bridge-side Mute: Approx. 80*18mm/3 x 0.8inch Fretboard Muter LxWxH: Approx. 190*25*15mm/ 7.5x1x0.59inch Sound Hole Cover Approx.109*109*13mm 4.3x4.3x0.5inch Package Includes: 1 Piece Guitar String Mute Dampener Set Fretboard string dampener: features a soft cotton and sponge fabric, durable to use and no any damage to your guitar strings. You can fine-tune the pressure and damping of the strings through the strap. Guitar sound hole cover: you can eliminate unnecessary echo and increase the stage volume without affecting placement or performance.Fits acoustic guitars with 4.3 soundhole. Bridge-Side Silence: Built-in Mute Felt Material, excellent for you to practice guitar anywhere anytime without disturbing others. Easy to install: Small size, light weight, easy to install and remove, no tools or special installation required. Compatibility: Suitable for guitar, bass and other stringed instruments. A great aid for guitar/bass practice.