... portable car air compressors pump, 150PSI, 24V 19mm steel cylinder 7cm air hose material: ABS LCD screen portable car air compressors pump, ... Operating the compressor:step 1:Pull out the air hose, make sure the nozzle lever is in ... position to turn the compressor off. Disconnect the air hose and replace it inside the unit. NOTE: ... levels. Advanced LCD screen portable car air compressors pump, 150PSI, 24V