Stun Gun for your Keychain. Thousands of people carry some type of self-defense items for protection. However, some items are impractical and not acceptable to be taken into many locations. A small pepper spray key chain has been the go to product. Now the stun gun makes it to this category of small non-lethal self-defense. We carry our keys everywhere and is the ideal item to attach the small stun gun as we are the most vulnerable while walking to and from our cars. With your keys in hand you will be ready for the worst.