SHENFAN Stinger James Keating Re-designed Self Defense Force Manipulator Tool, Light-Strong Nylon Plastic Wolf-alarm Tools with Steel Keychain Size: 3 x 2 inch ; Weight: 16g Lightweight, compact and portable.Martial Arts Supplies / self-defense,Made of nylon steel, substantial as metal alloy Could be used for Key Chain or you bag,carry every day. Can be As a paperweight,Can be carry everyday in you pocket or bag.Girls or travelers self defense tools. Designed to conform naturally to hand and fingers.Hand Tools for survive, when your car in an accident,you can use it to smash the window.Can also be used in turn, is suitable for people of all ages