This ROTARY COMPRESSOR was made for the Swiss Armed Forces by Gebruder Sulzer. They average less than 50 hours total time and is powered by a standard 1600cc Industrial VW ENGINE. Output is approximately 100 cfm, 100 psi on dual outlets. Uses standard hose fittings. The compressor and Volkswagen engine break apart for carrying. The unit can be disassembled (4 bolts) into two parts with collapsible lifting arms to aid in portability. Perfect for 90# jackhammer, nail guns, sandblasters, etc. This is a great example of Swiss/German engineering. Weight approximately 550 #. http://www.umog.com/vwcompress/