Schrade Self Defense Key Chain Rod (Black, 6.0-Inch) Made from light weight polymer and is light on your key chain Measures 6" overall and 5/8" in diameter and weighs only 1.2 ounces Inexpensive self-defense weapon right at your fingertips Use to strike an assailant to deter/detract an attack and flee Use the kubotan as a handle to swing your keys at an assailant's body/face