Features: Perfect for musicians seeking Erhu fine tuners with enhancing durability. Featuring a tool quick install design, this copper string adjuster attaches securely in seconds. The corrosion resistant brass mechanism withstands frequent retuning, ensuring crisp sound quality across rehearsals and professional gigs. Optimize your practice at music academies, live performances, or home studios effortlessly with this universally adaptable Erhu tuning accessory designed for adjustments. Suitable for both novice player mastering their craft and seasoned performers requiring stage ready instruments, its frame balances portability and strength. Specifications: Material: ABS and metal Type: 4/5/6 Size: about 37x18.8mm/1.46x0.74inch Package Includes: 1pc Erhu String Adjusters 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.