Little and complex emergency survival gadget.Contains smaller knives and trench lighters compared to the thumb. 4.8cm pure aluminum sharp knife. The more used, the brighter of knife copper body. (Based on Amazon’s logistics principles, this milder product does not contain kerosene. The kerosene used from the milder needs to be purchased locally by the customer). Ordinarily you are able to use them as a decoration for the keychain. When you experience an urgent need to cut something or need to ignite something, you’ll find this gadget so adorable and intimate. You think they’re the keychain lighters and knives in the world, when you see them.