Gruvgear Fretwrap SM, Professional String Stopper / Damper, FretWrap effectively helps to attenuate harmonics, resonating idle strings, and sympathetic resonances during recordings, live performances, and two-hand tapping, The adjustable band allows fine tuning of the pressure and damping of the strings, Can be fixed to the headstock when not needed, Special tools or modifications of the guitar are not required, Size: SM - fits 4-string basses, 6-string electric and steel-string guitars, and ukuleles, Colour: Black