1NON DAMAGE: The chord trainer clamping surface use the entire gel surface without fraying the strings, and the ukulele chord learning system tool is perfect for beginners 2COMFORTABLE AND PORTABLE: The round button design eliminate finger pain when pressing the string, making playing easier. And ukulele practice assistant is easy to use, with ergonomic design, compact structure, easy to carry, very easy to operate, chord press practice, anyone can quickly and easily learn to play ukulele 3MAIN FUNCTIONS: Ukulele chord trainer can improve the efficiency of chord conversion, cultivate the correct hand shape, scientifically exercise finger strength, press the chord more accurately, make the performance more smooth, improve the efficiency of chord conversion, and play more smoothly 4EASY TO INSTALL AND USE: The clip design make the auxiliary tool easy to install, avoid cumbersome installation, and can be used simply by clamping. One color correspond to one chord, and six colors are easy to remember 5FAST AND EFFICIENT: Ukulele practice assistant is efficient and practical, fast and convenient, learn chords in a short time, help to play the ukulele quickly. Suitable for all ages, adults and children, who want to learn to play the ukulele 1 x Ukulele Chord Trainer 1 x User Manual