Multifunction: Guitar repair kits, you can make the necessary measurements and adjustments, perfect for Change strings, set intonation, adjust action, check string height, etc. Usage: This guitar maintenance kits includes string changes and settings, great for maintaining and keeping your instrument in good performance. Portable: These guitar tool kits comes with zipper carrying case, each tool has accroding firmly place, no need to worry about missing small parts or messy guitar repair tool. Features: Guitar repairing kits includes string winder, screwdriver, hex wrenches, pliers, files, string action gauge anfd pitch ruler, steel ruler, and more. Perfectly for string instrument cleaning, maintaining and repairing. Professional: Guitar luthier tools are suitable for Luthier, string Instruments user, guitar, DIY tools for many workers. Specification: Material: Stainless Steel, PVC Carring Case:20cmx10cmx6cm/7.87inchx3.94inchx2.36inch. Package Includes: 1 String Winder 1 Plier 3 Files 3 Hex Wrenches 2 Washer 1 Double Head Wrench 1 Ruler 15cm 1 Orange File 1 String Action Gauge 4 Guitar buckle 1 Levelling ruler 1 Carrying Case