1.Easy Apply, Easy Remove Piano Stickers:The Piano Notes Guide Is Made of Waterproof Silicone, No Paste, No Adhesive. Easy to install, Easy-to-Remove, Without Leaving Any Residue | 2.Specialized for 61 Electric Piano: Piano Note Strips Fit Standard Sized 61/54/49/37 Key Keyboards Such as Alesis, YAMAHA, Casio, and Other Brands of Electric Digital Pianos,Baby piano,Kids piano. If Your Keyboard has Less Than 61 Keys, You Need to Cut the Product as Instructed. Some Non-Standard Size 61 Key Keyboard Instruments May Not Fit Properly. Please Confirm the Width of the Gap Between the Top of the Black Keys and the Keyboard Shell, Which Must Be Wider Than 2.4mm (0.1 inches). NOT work with 88 Key Piano | 3.More Notes Information: It Has Three Sections: Low Notes, Middle Notes, and High Notes. Both the Treble and Bass Staff Structure, All Pitch Names, F Sharp/B Flat, and Sol-fa Syllables Were Printed in Perfect Position, Thin Silicone Made It Easy to apply appropriately on Keyboards | 4.Black and White Strong Contrast Colors: The Black and White Piano Keyboard Label Strip Are Large Enough, Clear, and Easy to Read, Kids Feel Joyful to Learn the Piano and Memorize Note Positions. It Is Very Suitable for Beginners and Kids to Learn and Remember Music Theory, Music Scores, and Key Positions | 5. IDEAL GIFT: The Detachable Piano Note Stickers Are Equipped with a Gift Box, Which Is Easy to Carry. It Comes with a 5.9*49.2 Inches Keyboard Dust Cover Cloth Which Helps to Keep Your Keyboard Clean and Tidy. As the Keyboard Cover Was Folded in the Box, If You Receive It with Creases, Please Wet It with Water and Air Dry, or Use an Iron to Smooth It Out | 6.Compatibility:Due to the different key spacing of different brands piano/electronic digital pianos, it maybe not all flat on few brands of pianos