Tru-Flate's Clip-on Safety Blowgun converts standard ball foot air chuck into a blowgun. Meets OSHA regulation 100-1 for 30 PSI 'dead head' pressure. Vented nozzle relieves compressed air should nozzle become plugged or obstructed. 8-1/2 inches long. All metal construction. Tru-Flate is part of the Plews & Edelmann group. Plews Manufacturing and Sales Corporation was originally founded by R.G. Plews in 1927. At that time, the railroad industry was the primary focus for the company's extensive line of oil cans. As the transportation industry went from trains to passenger cars and trucks, Plews shifted their focus to developing the tools necessary to service this new mode of transportation. Fast forward 90 years and Plews has become part of Plews & Edelman. Today, Plews & Edelmann is a leading designer, manufacturer and distributor of a broad range of automotive parts and tools sold to the vast majority of mass merchant, retail auto parts stores and wholesale automotive parts and industrial distribution outlets, worldwide.