Plug connector straight hose 8 mm external thread. 3/8 Thread specification: 3/8 Quick installation, simple and smart, saves space. Plug connector used for connecting pneumatic hoses of various kinds of pneumatic systems such as: PU, PA, PE Automatic locking of the connection when the hose is inserted into the connector. The clamp is released when the blue ring is pressed down. price is for 1pc. ,