Features: They are practical and mulitifunctional, which can effectively polish the guitar strings. You can cut them into different shapes to meet your various needs according your using conditions. These erasers are simple and quick polishing tools that can repair scratches and quickly remove oxidation. Small and lightweight, there is no complex using requirement, easy to store, very suitable for kids and students. Flexible polished erasers can be effectively attached to the guitar wire, reducing the damage to the fingerboard during use. Specifications: Materials: Eraser Size: about 4x1.8x0.8cm/1.57x0.701x0.31inch Package Includes: 10Pcs Fret Polishing Eraser note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.