describe: High-Quality Material Our music keyboard stickers are made of high-quality PVC material, which is reusable and leaves no traces of glue. Once you've mastered your piano lessons, you can easily remove them without leaving any residue. Easy to use, just find the piano keyboard stickers and press them on your electronic keyboard or piano keyboard. Our products include mounting pins to make your installation easier. Thoughtful Design Each note is color-coded and printed with musical letters, staff, and note rises and falls. Beautiful stickers help you quickly identify and remember the different melodies of the piano keyboard. Accelerate piano learning. Wide range of applications Our stickers are great teaching tools for piano teachers and great helpers for children and beginners. Can be given as a gift to children or friends who have just learned piano. Packaging contents: A set of electronic keyboard stickers