The Note Strip is made of silicone, and connects the labels in series, so there is no need to stick to the keys like piano stickers. Easy-to-install, Easy-to-remove, without leaving any residue, and keeping your keyboard clean and tidy. Showing the note of each key with double staff, which helps to find the corresponding key from the keyboard faster, because all piano scores use the treble and bass staff structure. You don't need to know the names of the keys or where the Middle C is, you just need to put the note strips on the piano keyboard. Done in seconds! & When you start to know the keys and become familiar with the octave rule, you can remove the note strips from the keyboard. Of course, if you feel that you are not skilled enough, you can put it back at any time. /-Perfect for grand pianos, upright pianos, 88-key digital pianos and keyboards. Attention: Due to manual measurement, please allow for a slight error. Please make sure you don't mind before bidding. The color may vary depending on the monitor, please understand. Attention: Hello, please pay attention to your shipping address when purchasing products. If your shipping information (such as name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly