Partstock(TM) 2-Pack Aircraft Aluminum Tactical Self Defense Keychain A skull-crushing This self-defense keychain is made out of hard steel and fits perfectly in the palm of your hand.(Blue & Green) Handcrafted with lightweight aircraft aluminum making the ideal Self Defense Keychain? Finger grooves for better control and grip and includes keychain loop Measures 5.5-Inch and only weighs 2 ounces will not add stress to your keychain Aircraft Aluminum Tactical Self Defense Keychain A skull-crushing This self-defense keychain is made out of hard steel and fits perfectly in the palm of your hand SDK is often poorly copied, the Partstock to insure a Genuine high quality product