Product Description: The NLB-500 portable internal combustion impact wrench features a novel design, compact size, light weight, and high maneuverability. Its two-stage handlebar damping makes it easy to carry and access, making it particularly suitable for trackside maintenance work in areas such as turnouts, tunnels, and bridges where large and medium-sized maintenance machinery cannot operate. The NLB-500 portable internal combustion impact wrench is a high-performance tool powered by a two-stroke gasoline engine. It is the lightest impact wrench in the market, yet it generates high torque from a small engine, weighing less than 20 kg. It offers excellent balance, can stand upright, and has an easily accessible control switch for enhanced ease of use. Its gasoline engine power allows it to be easily carried by a single person to any construction site, including rainforests, mountainous areas, deserts, and remote locations without access to electricity, air compressors, or generators. It can accommodate bolts up to M32 mm and is ideal for tightening and loosening sleeper bolts and other bolting applications.