This set includes versatile fittings to suit various configurations: 1 large female connector with female thread, 1 with male thread; 4 small male connectors, and 4 small female connectors, all tailored for 1/4 inch standard air hoses. Constructed from heat-treated hardened steel with a copper-plated , this quick coupling compressed air set is robust, rust-, and -proof, ensuring a and reliable connection for all your pneumatic needs. Ease of use is with our quick connect system for air compressors; simply pull back the collar, insert the plug, and release to lock securely. Detach with a backward slide of the ring, emphasizing simplicity and productivity in pneumatic operations. Featuring airtight design, each 1/4 inch quick connect coupling has a built-in valve that automatically shuts off the air when switching tools, enhancing safety and increasing efficiency during the tool change processes. perfect for a multitude of applications, this 1/4 inch quick coupling seamlessly fits pneumatic tools, air compressors, and automotive systems, minimizing accidental disconnections and streamlining tool transitions., Manufacturer: PokFhgur