Auto air compressor, portable 1)Max pressure:250PSI ,Dc12V 2)Light/flash/inflate, ... functions in one pump 3)easily operate QL-227Auto Air compressor,1)Max pressure: 250PSI2)DC 12V, 3)19mm cylinder,4 ... ./N.W.:16/15kg13)1*20ft: 3900pcs14)1*40ft: 8000pcs Auto Air Compressor portable air ...