The Wilderness Solutions FireStar Fire Piston is a highly engineered, highly reliable fire starter. The FireStar Fire Piston is constructed from machined 6061 aluminum and engineered to hold up under the harshest outdoor environments. This compression fire starter was designed with the modern hiker, backpacker and survivalist in mind and features a high compression O ring seal for dependability. If you are looking for a sure fire way to start a fire when all other methods have failed or are unavailable the FireStar Fire Piston is what you are looking for. And now even easier to use with the Patent Pending Pressure Relief valve.