Here's what Fender say about the Guitar Tool Kit by CruzTools
Every musician needs a basic tool kit for setting up and adjusting acoustic and electric guitars and basses. The Fender Custom Shop Tool Kit by CruzTools makes it simple with a convenient collection of the most essential and commonly used tools-specifically designed for Fender musical instruments.
This kit contains all the basics for most minor adjustments, including a 4-in-1 screwdriver, hex wrenches, ruler, diagonal cutter, capo, feeler gauges and guitar string winder. These are the same high-quality setup tools used by the pros, and everything is stored in a convenient polyester storage pouch that fits easily in your case or gig bag. Hand tools come with limited lifetime warranty.