Features: 1.The guitar aid can play common extended chords, 7 chords, 9 chords, and stay chords. 2.One color corresponds to one chord, and the 6 rainbow colors are simple and easy to remember. 3.30 kinds of chord pressing methods are converted into memory of six colors. 4.Introduce the concepts of "universal chords" and "series", so that novices can play songs quickly and smoothly while learning by themselves. 5.The guitar aid can improve the efficiency of chord conversion, make playing more smoothly, train your fingertips to exert strength vertically and cultivate the correct hand shape. 6.The guitar aid is made of durable ABS materail, smooth to touch. And theback clamp prevents the tool from slipping off the guitar. specification:Item Type: Guitar Aid Material: ABS+PC Colour: Black PackageList:1 x Guitar Aid Note1. When the guitar aid is to be replaced, please remove it and re?clamp it. Don't be lazy, push it back and forth, all infer the back feet of the guitar aid, causing man?made damage. At the same time it is not conducive to the maintenance of the guitar. 2. The guitar aid is clipped to the first product, and the pop?up is the key of C. If you want to play the original key of the song, it is recommended that novices use the capo (because the capo fingering is unchanged).