Specially designed for tuning guzheng and most machine devices that have quadrilateral openings.
Note: Please measure the tip size of your device before purchasing, make sure the size of your devices match with the wrench quadrilateral.
Note: Please measure the tip size of your device before purchasing, make sure the size of your devices match with the wrench quadrilateral. Specifications: Material: Engineering plastics & Steel Inner bore size: Approx. 0.65cm / 0.26in Overall Length: Approx. 16cm / 6.3in Handle Length: Approx. 10.5cm / 4.13in Weight: 78g / 2.74oz Package includes: 1 * Square Shape Piano Tuner Spanner