??It is useful for outdoor travel. Features: Made from magnesium and iron， water resistant and durable to use. Only consists two simple parts， but it owns multi-function. It can be used as a whistle for emergency. With a black lanyard， easy to carry. Applicable at anywhere， anytime and any condition， including moist weather or low temperature. Simplicity of operation. High quality， can be used for thousands of times. Specifications: Material: ABS !#!amp!*! Magnesium !#!amp!*! Iron Color: Red， Orange(optional) Item Size（L * W): 8 * 0.5cm / 3.15 * 0.20in Stone Length: 4cm / 1.57in Item Weight: 20g / 0.71oz Package Size: 11.5 * 8.5 * 1cm / 4.53 * 3.35 * 0.39in Package Weight: 21g / 0.75oz Package List: 1 * Flint Fire Maker