1. No glue, no sticking: The piano note strips are made of silicone and connected in series, so there is no need to stick them onto the keys like traditional piano stickers. Easy to install and remove without leaving residue, keeping your keyboard clean. 2. Dual stave display: Each key is labeled with note names on a double stave, helping you quickly locate the correct key. Compatible with standard sheet music using treble and bass clef structures. 3. Ideal for beginners: No need to know key names or the location of middle C. Simply place the note strips on the piano keyboard for quick setup in seconds. 4. Removable and reusable: Once you become familiar with the keyboard and octave layout, you can remove the note strips. Reattach them anytime for additional practice as needed. 5. 88-Key full size: Designed to fit standard 88-key pianos. Suitable for grand pianos, upright pianos, digital pianos, and keyboards with 88 keys. May not fit non-standard 61/54/49/37-key instruments. Please verify your keyboard size before purchase, especially the gap width between the top of the black keys and the keyboard casing, which must be greater than 2.4 mm (0.1 inch). Package Included: 1 x Piano Note Guide