The Swagelok SS-600-7-8 Stainless Fitting is a set of 4 high-quality fittings designed for use in hydraulic, pneumatic, pump, and plumbing systems. Made in the United States by the reputable brand Swagelok, these fittings feature a 3/8" tube size and 1/2" female NPT threads, providing a secure and reliable connection. With the durable stainless steel construction, these fittings are built to last and withstand tough industrial applications.