Sometimes, when trying to carry with you a folding blade, discretion is key. And that's the exact idea behind Everyman's Porter Key Knife. Made from 3CR13 stainless steel, this 1-ounce 2.5-inch keychain tool - which looks just like another key on your chain when not in use - actually unfolds to reveal a 1.2" straight edge blade. On top of that, it also weighs just once ounce, has a reinforced keyring for added security, and features a built-in bottle opener that will always be on you when it comes time to unwind.