This is a set of a BOSS TU-12 tuner and a 10-piece maintenance tool kit. With these tools, you can: ① Adjust neck warping (compatible with both Gibson and Fender types) ② Tighten and adjust the torque of various parts ③ Change strings. [Tool Set Contents] ■ Photos 3 and 4 Two types of Phillips head screwdrivers, two types of flathead screwdrivers ■ Photo 5 Hex wrench (metric), ESP multi-spanner Offset screwdriver, pipe wrench ■ Photo 6 Nipper, string winder * Sold as a set only. * This is a used item. Please check the condition in the photos before purchasing.