Amflo 200D Standard Series Blow Gun. 1/4" NPTF inlet and 1/8" NPTF outlet. Rugged construction with hand hook. Accepts a full range of accessories. Blow gun does not have a safety bypass to prevent tip pressure buildup in the event of blockage. Complies with the requirements of OSHA 1910.242b when used on a regulated line of 30 PSI or less. Use male threaded pulg (1/4" NPT). Make sure plug is securely tightened to blow gun.