DescriptionPremium material, resistance to compression, corrosion resistance, high performance and high reliability. Fast and easy to install, no tools needed. When using the coupler(s) slide back the sleeve, push in the connector and then slide back the sleeve fully to lock in the connector.Feature- Color: As shown - Material: Iron - Size: 5.8 x 2.5 x 1cm - Made of heat treated hardened steel for strength and durability. - Self locking quick access internal brass lock, double sealed structure - Easy push to connect - Enables tools and airlines to be quickly connected / disconnected.