ITEM NAME:L-shape Square Shape Piano Tuner Spanner Guzheng Tip Tuning Hammer Wrench T B2S5 L-shape Square Shape Piano Tuner Spanner Guzheng Tip Tuning Hammer Wrench T B2S5 L-shape design, easy to use it. Small and exquisite, convenient to carry it. Specially designed for tuning guzheng and most machine devices that have quadrilateral openings. The metal shaft is made of hard steel, abrasion resistance. Color: dark coffee color 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 Included:1 x Square Shape Piano Tuner Spanner Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.