TIN-PLATED IRON - Made of tin-plated iron to resist rust, corrosion resistant and in use. WIDE APPLICATION - High compressive strength, good performance and high reliability. Widely applied to pneumatic tool, auto industry, air compressor, mechanical engineering, etc. PIPE CONNECTOR - These quick connectors were designed for convenient connection and disconnection of pipes. These air hose quick coupling are mainly used for pneumatic tool, easy to achieve the connection or disconnection of piping without other tools. ABOUT DETAILS - 8 pieces. The thread diameter of the air line hose compressor fittings is BSP 1/2", and the install form is SP, PP, SH, PH, SM, PM, SF, PF. PACKAGE INCLUDES - 1/2" Male and Female Thread Quick Coupler Plug, Male and female Thread Connector Socket, Barb Quick Coupler Plug, Barb Connector Socket, Quick Coupler Plug (8 x 12mm), and Connector Socket (8 x 12mm)., Weight: 0.220462262 Pounds, Manufacturer: Hyuduo