Description: The guitar chord practice tool is easy to install in one clip. Hold down multiple strings with one click. Nine universal chords, F,BM,EM,C,AM,G,AM7,DM,D, with these chords, you can play more than 90% of popular songs. Adults or children, young or old, anyone can quickly and easily learn to play-guitar. Simple to use, just press the button with chord name, then you can play the chords of the songs easily. The guitar practrice aid is suitable for most brands of folk guitar between 38 inch to 41 inch. Specification: Material: ABS Plastic Size Chart: 11X14CM/4.33X5.51inch Package Includes: 1*Pcs Teaching Aids Chord 1*Pcs Strings 1*Pcs Wipe 1*PCS Allen wrench Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping