Xtra-Thrust® Air GunsThe most powerful safety air gun available, it is designed to quickly move large volumes of debris. The Venturi tip increases thrust, with a 1 4" inlet and a maximum operating pressure of 150 PSI, resulting in a very high volume of air that equals 1 2" open pipe in effectiveness, yet meets OSHA standard with a limit of 30 PSI dead end static pressure. Constructed with rugged, cast aluminum body and full length trigger. For maximum performance of XTRA