Unique venturi nozzle delivers 100% more thrust than conventional air guns. Best for cleaning food and grain processing machinery, conveyors, grain elevators, rafters, pipes and areas under equipment. 1/4" NPT (female) inlet and maximum operating pressure of 150 psi. Meets OSHA 1910.95, 1910.242, 1915.131, 1917.154 and 1926.302.