Features:1. High-quality material: Durable adhesive material that will not damage the keyboard. Made of high-quality transparent PVC, the stickers don't roll up or peel off, but they are still easy to remove and leave no traces.2. Easy to use: The number on left bottom of the sticker can help you complete the installation in minutes. If you paste it in the wrong place, you can find it and paste it again. When you dont need it, remove it without leaving any residue.3. Applicable to all pianos and keyboards: Suitable for 88, 61, 49, 37 keys. Piano teacher teaching tool to help students learn keys and notes.4. Multicolor Design: The colorful piano stickers are very eye-catching. It makes study notes simple and speeds up the memory of keystrokes.5. Stave, pitch name, syllable names, 3-in-1. Great for beginner piano players.Notice:1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow minor deviation due to manual measurement.Specification:Product Name: Piano Keyboard StickerSingle size: 15.5mm * 40mmSticker material: environmentally friendly removable PVC adhesive stickerSticker functions: key identification, identification of music score, memorize music scoreNote: Do not washApplicable people: beginners, piano loversApplicable keyboard: 88, 61, 49, 37 keys piano.Sticker functions: stave, pitch name, Syllable namesincludes:2 x Piano Keyboard Stickers