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、The rangefinder 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、A full set of accessories, suitable for cleaning column instrument 5、Suitable for electric guitar, bass, banjo, mandolin and various stringed instruments 9 x Radius Gauge1 x Sander1 x 3 in 1 Tool1 x Measurement Ruler2 x Gasket1 x Spacing Ruler Item Type: Guitar Tool SetUsed for: GuitarMaterial: Metal + polished stoneProduct Size:Polishing Stone: Approx. 10 x 1.2 x 1.2cm / 3.9 x 0.5 x 0.5in Gasket: Approx. 7.8 x 2.2cm / 3.1 x 0.9in / 1.3 x 0.1cm / 0.5 x 0in 3 in 1 Length: Approx. 12cm / 4.7inRadial Ruler Specifications: 7.25, 9.5, 10, 12, 14, 15, 16, 17, 20 spacing rulerScope of Application: 0.04- 0.88mmNumber 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