QUALITY: A set of quick-release fittings, a perfect starting set or for making new hoses, etc. 1/4" quick coupler connectors, do most of what you need. Compressive strength, high performance, and high reliability. Fast and easy to install, you do not need any other tools. Prevent air from escaping when changing between tools. SIMPLE TO USE: Spring-loaded quick-release couplers for use on the compressor side have a valve built in to shut off the air when changing between tools. Easy to use, just slide back the collar and insert the fitting, then slide the collar fully back to lock in place. MATERIAL: A set of quick-release fittings is made of heat-treated hardened steel. It enables tools and airlines to be quickly connected or disconnected. APPLICATION: Widely used in systems such as air compressors, air couplers, air tools, air couplers, automatic manufacturing operations, aircraft controls, and tire installation in industries including agriculture, mining, road construction, firefighting, and aviation. LOCK: When using the coupler slide back the sleeve, push in the connector and then slide back the sleeve fully to lock in the connector., Weight: 0.220462262 pounds, Manufacturer: Dapetz