CASTAIR gas powered compressors have the same pumps (C1 or C2) as the Industrial Series compressors, and offer the same high quality components. All compressors are powered by Honda engines, providing reliability to get the job done. Engine sizes range from 9 - 20 HP and come with throttle control, fuel tank, & 12v alternator. CASTAIR also has a compressor/welder/generator unit available, which provides you with the ability to get multiple jobs done with one compressor. Contact us today to discuss your specific application and which model is right for you.