INCLUDES - Comes with 1 threaded female connector and 1 threaded female connector and 4 male connectors, male connectors and 4 female connectors, male connectors. For pneumatic tools, air compressors, air hose lines. FUNCTION - The quick connectors are quick and easy to use. Spring intended for use alongside the compressor. The compressor has a built-in valve to shut off the air when changing from tool to tool. the other. Nickel plated finish for resistance to wear rust and corrosion. SIZE - 1/4" BSP. 12mm Hex Fitting (Male Connection) 16mm Hex Fitting (Male Connection) 19mm Hex Fitting (Female/Male Connection) Type: Male/Female Connection, Male/Female Connection Thread. DESIGN - Easy to use, simply slide the collar back and insert the fitting, then slide the collar all the way back to lock. Allows tools to be connected and disconnected quickly. BENEFIT - Manufactured from hardened steel. Heat treated quick connectors for use on the compressor side feature a built in valve to prevent