Features: Professional guitar service kit, stored in a handy carrying holder case bag. All in one tool kit for Guitar, Mandolin, Banjo, etc. Include ruler, hex wrench set, files and strings, string organizer, bridge-pins, picks and picks bag, etc. Perfect for string instrument cleaning, maintaining and repairing, keeps your instrument in nice playing condition. Professional guitar service kit, stored in a handy carrying holder case bag. Specifications: Material: Metal, plastic Package Size: 20 * 10 * 5cm / 7.9 * 3.9 * 2.0inch Package Weight: 370g / 13.1oz Packing List: 1 * Set of Red Copper Strings 1 * set of Copper Strings 1 * String Action Ruler 1 * Guitar String Winder Cutter Pin Puller 3 * Guitar Files 1 * Steel Ruler 1 * Screwdriver 6 * Guitar Bridge-Pins 1 * Set of Guitar Bones 3 * Hex Wrenches (4/5/6mm) 1 * Picks Bag 5 * Guitar Picks 1 * Nylon Carrying Bag