Miller Electric Mfg.'s HDI Air Pak combines multiprocess welding capabilities with an integrated rotary screw air compressor. Each model is integrated into the truck chassis to save weight and space with a 54% smaller footprint over engine-driven welders and standalone compressors. The system can offer compressed air with 40 cfm or 60 cfm, depending on the mattle, and the battery charge/crank assist provides up to 150A of DC power for 12/24V battery charging. The HDI Air Pak also comes with a 7,000-watt generator for electric tools and lights, and can offer 265A or 325A of output for welding. Comes in the 265 or the 325 model.