Feature: 1. FOR THOSE WHO GIVE UP GUITAR: This is for those who give up the guitar because of finger pain, humming of the strings, or the need to grow finger cocoons when directly plucking the strings 2. MORE THAN 110 CHORDS: Come with 18 buttons, more than 110 chords are available, including all basic chords of C, D, E, G, and A guitar keys 3. PERFECT AND CLEAR TONE: You will produce a perfect and clear tone, which is difficult to achieve when you rub the strings without sound 4. IMPROVE CHORD CONVERSION EFFICIENCY: Chord learning tools can help you do hand postures and practice hand muscle memory. Improve the efficiency of chord conversion and make playing more smoothly 5. FOR GUITAR LOVERS: Suitable for guitar lovers, beginners and everyone, also can be given as a gift to your family and friends Specification: Item Type: Guitar Chord Changer Material: Plastic Colour: Black Scope of Application: Folk guitar (38in ~ 41in). Package List: 1 x Guitar Aid1 x Chord Chart6 x Rubber Band1 x Installation Drawing