uxcell 6Pcs Violin Practice Fingerboard Sticker Fret Finger Guide Marker Chart Product Name: Violin Practice Sticker; Material: Paper; Total Size: 22 x 4.7 cm/ 8.7" x 1.9"(L*W) A great tool to learn Violin, the fret markers replace the tapes on the fingerboard method of teaching fingerings to beginning string students. Suit for violin 1/4 3/4 4/4 1/2 1/8 1/10. High Quality, oil proof, Removable, will not leave glue when peel off. Easy to use: No need to loosen or remove the strings to put it on.