Features: It is a type of sticker used to directly attach the staff pattern to piano key, making it easy for beginners to recognize and remember the position of note. It can be easily pasted onto piano keyboards without the need for additional tool or adhesives, making it convenient and fast. The stickers are printed with clear staff patterns, and each note position is clearly marked, allowing beginners to quickly understand and remember the position of each note. The sticker can be easily removed and reapplied to other key positions, making it easy for users to adjust and replace at any times. Suitable for piano beginners, children, music enthusiasts, and those who need to refer to the staff. Whether it is learning the basics of piano or playing specific track, this keyboard sticker can provide convenience and assistance. Specifications: Materials: PVC Color: Black/Color Packaging size: about 45x60x60mm/1.77x2.36x2.36inch Package Includes: 1pc Piano Keyboard Stickers note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.