Frequent are the times on your truck or elsewhere you need a blade — nothing large, nothing industrial. All you need is something sharp with which to cut some twine or open a package.
The B-2 nano blade keychain pocket knife may be just what you seek. It’s small enough to keep with your keys but strong enough to do what is asked of it.
Weighing less than an ounce, the B-2 nano blade has a super-sharp, serrated stainless steel blade held in place with a lock lever. It’s made of 440C stainless steel and comes with its own carabiner to attach to your keyring.