This kit has everything you need to keep your instrument in top playing shape, whether you're doing a quick string change or a complete setup. The kit includes the following: System 65 Superlube® Gel Pen, Multi-Function Gig Light, Fret Polishing Cloth, Fret Collars (.080" & .125"), Compact String Cutter, Four-Way Screwdriver (2 flatheads & 2 phillips), Multi-Spanner Uni-Wrench, Formula 65™ Polish & Cleaner, String Action Gauge, microfiber polish cloth, Hex Key Multi-tool, Universal speedwinder