The tweezer cap lives on your key-ring. It is machined out of a solid piece of 6AL4V titanium. The tweezers snap in and out of this cap for easy access. The nice thing about running the cap is you don’t need to drag your entire key-set around to actually use the tweezers. Just snap them out to use. The tweezers are guaranteed to stay secure inside the cap when not in use. Another benefit is you cannot damage the tips of the tweezers, or have the tips of the tweezers damage anything else while they are protected by the cap.