Transparent and Removable: on transparent vinyl and coated with a long lasting adhesive material that will not damage your keyboard. Double Layer Coating: Stickers are laminated to protect the inks from frequent use, nail polish, or other . Works on Keyboard: Enough for any keyboard or piano WHITE KEYS (49, 61, 76, or 88 keys). The sticker sheet cover FOUR OCTAVES. Product category: piano stickers Applicable scene: music instrument colour:chromatic colour Material:Transparent PVC size:29*21cm Package Contents: 1*Piano Sticker Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.