Most air blow guns at Tool.com are made of plastic or metal and include an ergonomic grip or handle. A steady stream of compressed air is delivered through a sturdy metallic nozzle. Air blow guns that are equipped with an internal fail-safe pressure mechanism shut off automatically if the gun is dropped or the lip is blocked. Integral pressure relief valves are used to blow off excess pressure before discharge. Typically, manufacturers indicate whether products are suitable for high volume applications, or include a threaded discharge port or vacuum attachment. The 90 psi air blow gun is a durable hand tool designed for professional industrial use. The air gun is fitted with a specially designed, patented nozzle in stainless steel. This allows an effective blowing force and a low noise level. The nozzle creates a concentrated jet of air which reduces turbulence, thus enabling a more targeted, effective blowing force. The model has a lightweight, slim design. The ergonomic handle allows several different grips to make work easier and reduce the risk of repetitive strain injuries. The best possible control of blowing force. Thanks to the air blow guns unique technology, the operator has full control over the infinitely variable blowing force. Because trigger opening force is independent of pressure, the risk of repetitive strain injuries is reduced.