- SODIAL(R) Guitar Fretboard Note Decals Fingerboard Frets Map Sticker for Beginner Learner Practice Fit 4 Strings Bass Guitar(Bass-Multicolor) The best helper for beginners. Fit for all 4 strings bass guitar. Innovative Fretboard Note Decal helps you Learn Bass and Master the Fretboard! Super wear-resistant,ultra-durable Imported glue,without leaving glue,cardboard have no damage Easy to install and remove. Can be re-paste.