Topring 60.383 Airpro Safety High Flow Venturi Nozzle Blow Gun With 20 Inch 8mm Tube

If The Tip Of The Nozzle Is Blocked, A Check Valve Located Inside The Blow Gun Mechanism Immediately Shuts Off The Airflow. Thus A Worker Will Never Risk Being Exposed To Dangerous Airflow On His Skin. When The Tip Of Nozzle Is Free Of Any Obstruction, The Valve Reactivates To Release Air.