Flexzion Guitar Capo Acoustic Single-Handed Quick Change Key Trigger Tune Clamp with Soft Rubber Pad for Folk Classical Electric Music Instrument Accessories Portable in Black Convenient and portable; Perfect for the necks and fingerboards of electric or acoustic 6-string guitars Quickly and easily released and repositioned without disturbing the tuning; Can even change keys during a song Easy to use just operate it with one hand; Can clamp on any fret, hold the strings nice and tight This capo also fit the wider neck and flat fingerboards of the classical guitars or other guitars with straight frets Spring action clamp holds capo firmly in place, keeps strings in tune; Well-kept strings, leaves no traces on the instrument