Are you a guitar lover or does your friend enjoy playing guitar? This professional luthier tools guitar kit is designed for guitar repair and setup. It includes precision measuring tools such as a string action ruler gauge and notched radius gauges, ideal for both professional and personal use. Features - Color: Silver - Material: Metal - Size: 42.00 x 3.70 x 0.20 cm / 16.51 x 1.45 x 0.08 in - Size: 10.20 x 5.00 x 0.20 cm / 4.01 x 1.97 x 0.08 in - Size: 8.50 x 5.40 x 0.10 cm / 3.34 x 2.12 x 0.04 in - Size: 7.00 x 6.50 x 0.10 cm / 2.75 x 2.55 x 0.04 in - Complete guitar tool kit suitable for guitar maintenance, adjustment, and string action measurement - Includes understring radius gauge, string action gauge ruler, straight edge ruler, and fret rocker - High-precision measurement helps maintain guitar sound quality and is compatible with electric guitars, electric basses, and acoustic guitars - Constructed from durable metal with rounded edges to prevent scratching or injury during use - Compact and portable design for easy carrying and convenient use anywhere Package List 9 x Understring Radius Gauge 1 x String Action Gauge Ruler 1 x Guitar Neck Straight Edge Ruler 1 x Fret Rocker