Piano Guzheng Repair Replacement Accessories Tone Tuning Assistant Wrench Spanner Tuner Features: L-shape design determines that it is convenient for use. Small size, easy to store and carry. As an accessory, it can be used to tune the tone of piano and guzheng. The tone tuning spanner is made of quality stainless steel and plastic. Durable and can be used for a long time. Specification: Condition: Material: Stainless Steel, Plastic Color: As Shown Inner Bore Diameter: Approx. 0.65 cm / 0.26 in Overall Length: Approx. 16.5 cm / 6.5 in   Handle Length: Approx. 11 cm / 4.3 in Weight: Approx. 77 g Package List: 1 * Tuning Spanner Note: * Please measure the tip size of your device before purchasing, make sure the size of your devices match with the wrench quadrilateral. * For different monitors, the color may vary slightly. Besides, please allow some errors of manual measurement, thank you for your understanding.