The Coilhose 580 3/8" industrial coupler, 3/8" FPT, offers a durable connection for years of quality service. Also called a push-lok fitting, this steel air hose connector features a knurled body that enhances grip - and a drag guard that prevents accidental disconnection. The Coilhose 580 also features a maximum input pressure range of 300 PSI. This manual coupler has a flexible temperature range of -40°F to 250°F. It is designed with Buna N Seals and plated steel material. This air plug fitting has an industrial interchange, making it compatible with most compressors and air hoses. Made in the United States.