1、The rangefinder is made of high-quality stainless steel, which is anti-rust and corrosion-resistant, and can be used for a long time 2、Therangefinder can make necessary measurements and adjustments to stringed instruments 3、This guitar repair kit can be used to change strings, set pitch, adjust movement or check string height 4、Suitable for electric guitar, bass, banjo, mandolin and various stringed instruments 5、Complete tools, you can operate it yourself, suitable for guitar enthusiasts 1 x Chord Height Ruler9 x Radius Gauge(9 Different Specifications)1 x Spacing Gauge     1 x Sander2 x Fret Gasket1 x Velvet Bag  Item Type: Guitar Tools SetColor: Silver (Sander is cyan-blue)Material: Metal (except sander)Radius Gauge Specifications: 7.25, 9.5, 10, 12, 14, 15, 16, 17, 20Spacing GaugeScope of Application: Approx. 0.04 ~ 0.88mm / 0 ~ 0in Number of Blades: 32pcsMetric Dimensions (mm): 0.04, 0.05, 0.06, 0.08, 0.10, 0.13, 0.15, 0.18, 0.20, 0.23, 0.25, 0.25, 0.28, 0.30, 0.33, 0.35, 0.38, 0.40, 0.43, 0.45, 0.48, 0.50, 0.53, 0.55, 0.58, 0.60, 0.63, 0.65, 0.70, 0.75, 0.80, 0.88Inch Size: 0.0015, 0.002, 0.0025, 0.003, 0.004, 0.005, 0.006, 0.07, 0.008, 0.009, 0.010, 0.010, 0.011, 0.012, 0.013, 0.014, 0.015, 0.016, 0.017, 0.018, 0.019, 0.020, 0.021, 0.022 , 0.023, 0.024, 0.025, 0.026, 0.028, 0.030, 0.032, 0.035