1. Selection of high quality pure copper, stable pronunciation and no corrosion, increase the conductivity of the string to the bridge vibration 2. Multiple polishing, meticulous workmanship, with good purity and wear resistance 3. Effectively improve the sound extension and enhance the sense of granularity on the basis of the original guitar 4. Material: pure copper 5. Diameter: big diamond 0.5cm, crystal head 0.4cm 6. Application: folk acoustic guitar 7. Size: 2.8cm long, 0.8cm wide 8. Weight: about 4.1g
