Modern Fuel offers luxury metal mechanical pencils and writing instruments that are custom-made, heirloom-quality, and designed, machined, and finished in the USA. Their founders have a background in aircraft engineering and aim to apply the strict functionality and reliability standards from that industry to their products. They value attention to detail, sustainability, and a "buy once" philosophy, and offer a lifetime guarantee on their products. Their design principles prioritize beauty, simplicity, and durability, resulting in simple and timeless heirloom quality writing tools that will last a lifetime.