Guitar roll capo is metal and ABS, pad protect your guitars from scratches or damage, spring provides a right amount of tension. Keep the Tone : Guitar tone clips are suitable for adjusting the tone of the guitar as needed while playing. Suitable for specially tuned fingerpicking tracks, to keep the tuning stay stable and won'for t pinch the of tune. Sliding Modulation: Slide-type guitar capo can move the fingerboard up and down, and can be adjusted at will during playing, which is convenient and flexible. Wide Application: Guitar mobile capo fits most string instruments, such as Folk Acoustic Electric Guitar, Ukulele, Mandolin and Banjo. Value Package: Comes with a sliding capo in black, easy and to use, great gifts to your families or who like playing the guitar or other instruments.