This mechanical tuning shaft is an essential accessory for string instrument, offering stability and fine-tuning capabilities. Its construction ensures long-term use, while the ergonomic design allows for effortless adjustments. ideal for musicians aiming to achieve precise sound quality during performances or practice sessions. Features -Color:Golden -Material:Metal -Size:6.00X2.20X1.90cm/2.36X0.86X0.75in -Stable tuning accuracy: the precision-engineered metal shaft enhances tuning stability, ensuring consistent sound quality during every performance -High durability: built with a mechanical structure, this product resists wear and tear, offering functionality over time -Userfriendly replacement: designed for effortless replacement, this accessory is ideal for musicians who need quick and easy adjustments -Smooth adjustment experience: the finely crafted knob delivers a smooth and , improving the efficiency of string tension tuning -Universal compatibility: compatible with a wide range of erhu models, this accessory is a practical choice for musicians of all skill levels Package list: 1 pair x string shaft