PROLUBE 43305 AIR OPERATED GREASE GUN WITH EXTENSION/COUPLER, 14 OZ. CAP., 4800 PSI, 1/8″ NPT IDEAL FOR USE IN FACTORY MAINTENANCE, AGRICULTURAL APPLICATIONS, FLEET SERVICE OR FOR USE ON TRUCKS CONNECTED TO VEHICLE AIR BRAKE COMPRESSORS. AIR OPERATING RANGE 40-120 PSI (3-8 BAR); PRESSURE RATIO 40:1. AIR COMPRESSOR VOLUME 1 CFM / 0.026 CUBIC METRE AND ABOVE; AIR INLET THREADED 1/4″ (F). AUTOMATIC ACTION WITH CONTINUOUS GREASE DISCHARGE. INCLUDED IS 6″ STEEL EXTENSION, STANDARD 4 JAW COUPLER WITH BALL CHECK, AND AIR FITTING (1/4″ MALE)