●UPGRADED VINYL STICKERS: Printed on transparent material, 50% thinner than other stickers and you cant feel the stickers when you play the piano. ●Works for 88/76/61/54/49/37 keys: Please refer to instructions before you apply, it can help you to find the right key for right stickers. ●Easy Installation: Come with a stick for installation, just peel off the stickers and use stick to apply it to piano keys. ●Piano Sticker Use Instrution Included: Please read the use guide carefully, clean up the piano with soft cloth before apply, sticking sticker with installation stick will make it more neat and beautiful. ●Best gift for Piano beginner kids, help find the right key quickly. Can be removed with no resistance and never harm your piano.