Extremely useful when blowing out clogged lines, hoses and pipes OSHA-compliant rubber safety tips provide a good seal Working pressure: 75-120 psi Includes 9/16", 15/16" and 1-3/8" rubber tips 1/4" NPT inlet The ATD (8735) 13" Pistol-Grip Air Blow Gun with Rubber Tips is ...Extremely useful when blowing out clogged lines, hoses and pipes OSHA-compliant rubber safety tips provide a good seal Working pressure: 75-120 psi Includes 9/16", 15/16" and 1-3/8" rubber tips 1/4" NPT inlet The ATD (8735) 13" Pistol-Grip Air Blow Gun with Rubber Tips is extremely useful when blowing out clogged lines, hoses and pipes and has a working pressure: 75-120 psi. It includes 9/16 inch, 15/16 inch and 1-3/8 inches rubber tips. The OSHA-compliant rubber safety tips provide a good seal.