The Coilhose 155 1/4" industrial coupler, 3/8" MPT offers a durable connection for years of service. This industrial air hose coupler has a knurled body, which enhances grip. The maximum inlet pressure is 300 PSI. A drag guard prevents accidental disconnection and comes with Buna N Seals for durable sealing. Operating temperature range from -40 to 250 degrees Fahrenheit. Made in the United States.