Features: Brand new and high quality Extension: By using pure copper studs and brass strings, the timbre extension effect of the guitar can be extended. Finger play and folk guitar application: Specially designed for finger play and folk acoustic guitar to provide better timbre performances. Multiple packs: Each pack contains 6 packs, which is enough to meet the needs of guitar use. Pure copper string nail: Made from pure copper material, with good wear resistance and stability, making the string fixation more firm. Easy installation: Suitable for most guitars, and can be installed on the guitar bridge conveniently and quickly without affecting the performances process. Specifications: Material:Copper Package Includes: 6x Guitar Bridge Pin note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.