1. Material: plated wire strings 2. Improve erhu sensitivity and resonance effect, improve playing feel, enhance the sound quality of transparency 3. Outstanding craftsmanship, silver-plated copper wire winding more tightly, rust-proof and moisture-proof, not easy to aging 4. Outstanding playing feel, strong elasticity is not easy to break, less noise, no pain and no injury to the hand 5. Fine playing tone, balanced tension, rounded tone, delicate sound quality 6. High-carbon hexagonal steel core ductility, delicate sound quality and frequency stability 7. Individually sealed package, prevent oxidation, so that your strings maintain the outstanding tone 8. Weight: about 20g