Commercial grade Honda engine with excellent weight to power ratio that is designed to be used all day, every day. Belt drive system keeps the pump RPM low and running cooler to extend its performance and life span. Heavy-duty, splash lubricated pump with cast iron cylinders and aluminum body for optimum durability and performance. Pilot unloader valve is an USA Conrader set to cut in at 95 PSI and cut out at 125 PSI. Twin 4-gallon tanks are powder coated for added durability and each one has a ball valve tank drain port. Pre-drilled holes in the stabilizing brackets for mounting it into a truck or trailer. Integrated control panel is built into the frame for added protection. Includes regulator, two air gauges, two industrial type couplers, and a safety relief valve.