Features: All in one tool kit for Guitar, Bass, Mandolin, Banjo etc. Includes String Action Ruler & Gauge Measuring Tool & Hex Wrench Set & Files & String Winder & String Cutter & Bridge Pins & Picks & Picks Bag. Ideal for string instrument cleaning, maintaining and repairing, keeps your instrument in good playing condition. Also can be change strings, set intonation, adjust action, check string height & so on. Specifications: Material: Metal & Plastic Suitable: for Guitar/ Bass/ Mandolin/ Banjo Item Size: 20 * 10 * 5cm/ 7.9 * 3.9 * 2in Item Weight: 252g/ 8.9oz Package List: 1 * String Action Ruler 1 * Gauge Measuring Tool 3 * Hex Wrench 3 * Guitar File 1 * String Winder 1 * String Cutter 6 * Bridge Pins 4 * Guitar Picks 1 * Guitar Pick Bag 1 * Storage Bag