Guitar tool kit is compatible with guitar, bass, mandolin, banjo. Guitar tool kit includes all string changes and settings, perfect for maintaining and keeping your instrument in perfect performance. Change string, set tone, adjust action, check string height, etc. The ruler measurement tool can be used on both sides. It's easy to read, so checking and adjusting string actions is a breeze. Handy carrying case, compact musician repair repair kit, suitable for beginners or professionals. Product Specification: 100% Brand New Material: Metal+Plastic Weight: 462g Package Content: 1x Silver Fret Rocker Leveling Tool 1 x String Organizer 1 x Steel String Ruler 1 x String Ruler Gauge Tool 3 x Hex Screwdriver 3 x Guitar Files 1 x Screwdriver 1 x Package box 1 x Guitar Fret File 2 x Guitar Fingerboard Guards 1 x Mutifunction Screwdriver 4 x Guitar Strap Washer Note: 1.If you are not satisfied with our product you received, you can send emails to us at any time. We will reply you instantly and help you solve your problem. Key Product Features. 2.Due to different monitors, there may be a little color difference.