Sold as one unit. (1 unit = 10 each.) Compatible with copper, brass, aluminum and plastic tubing. Air, oil, water & gas 400 PSI max. Yellow brass. Bagged. 3/8"Tube x 1/8"MPT . Manufacturer number: AB68A-6A. SKU #: 41240. Country of origin: (TBA). Distributed by Anderson Fittings.