These bit drivers fit in perfectly with your keychain setup. They’re made from grade 5 titanium for durability and lightness, and sized just right so that they go unnoticed amongst your keys. The bits work well for their size, and that’s due to the key ring itself being part of the tool. Simply rotate either the Philips or flat head side out, and use the key ring for torque to quickly and easily tighten or remove a screw.