https://www.caifuair.com/products/cf850mf-22-cfair-850cfm-22-bar-mobile-compressor-for-drilling/ CF850MF-22 CFAIR 850CFM 22 Bar Mobile Compressor for Drilling CF850MF-22, a portable air compressor 850 cfm, designed by the manufacturer of the leading edge of compressed air solutions, is a drilling unit that is ruggedly designed to meet the needs of the demanding coal mining and water well drilling. CFAIR 850cfm @22bar is powered by famouse CUMMINS engine. Directly connected by coupling, the compressor can output more air with less energy consumption. Four-wheel drive with large turning radius which is applicable outdoor works under various conditions.