Features and Benefits: Easy to operate and manuever - simply push the tip against a surface to activate air flow Enables user to utilize air to clean air lines and blow out fluid lines When used with an extension (not included), blowing out hard-to-reach areas is no longer a challenge with the gun's push to activate design When used without an extension, the knurled body makes the gun easy to grip and hold The rubber tip won't mar surfaces and the tip's shape is ideal for small diameter cylindrical-type objects (tubing, lines, etc.) This can also be used as a regular blow gun by pulling the nozzle with one hand to activate air flow. Activation force is less than 4 lbs. so only one hand is required and minimal push force is needed. Air flow stops when the user pulls the blow gun away. Applications include: blowing fluids and clogs out of transmission or fluid lines, and clearing out heat exchangers and equipment using piping or tubing. Specifications: pressure rating: 125 PSI, operating temperature: 32 degrees - 175 degrees F., length: 3", diameter: 3/4", weight: 0.165 lbs. with a 1/4" NPT input port. Body is made of nickel plated brass.