With a 4' angled extension, this safety Blow Gn is great for hard to reach areas. Has an air inlet of 1/4" NPT and a maximum working pressure of 150 PSI. Includes both a safety nozzle and a rubber tip. This is OSHA compliant with the safety nozzle only, which will limit pressure to 30 PSI when dead ended. Nozzle threads measure 7/16" -27.