Parallel Lamp fixtures are SHO-HD (super high output-high definition) and compared to similar light towers, these give 50%+ more lumens per fixture. If interested, we have an optional Saf-T-Visor attachment which directs light onto the worksite that may otherwise have been wasted. Engine specs are as follows: 1,800 RPM Diesel Engine (liquid cooled), captive latch that's on tower support, as well as outriggers that eliminate the possibility of lost pins. Up to 12 units can fit on a flatbed truck, they can be loaded and unloaded with minimal effort due to Lifting Eye and Forklift Pockets. The fuel tank holds 30 gallons and is made of molded polyethylene. The tank also lows the possibility of contamination from rust and corrosion that can be associated with metal. Unit can work for about 65 hours continuously.