Fret Erasers Set for Guitar, Fret Polishing Cleaner, Fret Polish Tools, Rust Guitar String Remove Pen (100 & 400 & 1000Grit)[EFFICIENT amp; DURABLE]: Fret rubber bands are made of natural rubber and emery using a special foaming process. The hardness of emery is greater than that of corundum, so polishing the threshold is more efficient and more durable. [Universal]: The fret polish eraser can solve problems such as fret file scratches, corrosion/oxidation/rust of the thresholds and string. And it is suitable for polishing the character lines of most musical instruments, such as guitar, bass, ukulele, etc. [SOFT amp; ELASTIC]: polishing rubber can effectively match filaments and strings, reducing damage to filaments and strings. It can be cut into different shapes to make it easier to grind and polish different metal parts. [Multi-valued]: set of 100 and 400 and 1000 groats. The higher the grain count, the better and brighter the polishing effect. For more severe rust or oxidation, you can choose a smaller particle size and vice versa. [Excellent Design]: Good size to adapt according to your finger strength. Clear numerical characters make it easy to identify. A variety of matching colors and exquisite packaging. But keep it away from children. Because it looks like a delicious candy. rtable to capture. Color: MulticolorMaterial: Rubber + EmeryPackage Contents:3 x Fret Guitar Erasers (1000#/400#/100#)1 x Rust Guitar String Remove FeatherOnly the Above Packaging Content