Skull Self Defense Keychain Black. the concealed defensive weapon, this Demonic Skull Self Defense Keychain is the perfect match for you. Featuring a detailed demonic skull design, put your fingers into the eyes, and the 1-inch fangs become deadly spikes when clutched into the palm of your hands. The indestructible poly-resin body makes it lightweight and easy to carry around with you as a keychain. It sports a large silver ring to fit all your keys. While definitely giving off a fierce appearance, the keychain looks less threatening than it truly is but will surely provide you with peace of mind.