Garden Hoses -M8* 4mm Quick Compressor Coupler Connector Air Hose Adapter Highlights generic brand M8* 4mm Quick Compressor Coupler Connector Air Hose Adapter Description: Manufactured heat treated hardened steel for strength and durability plated stainless steel finish for rust and erosion resistance spring loaded quick couplers that should be used for the compressor so air is contained when tooling pneumatic is disconnected When using coupler(s) slide back of sleeve, push into connector, then slide back sleeve to fully lock into connector Allows tools and airlines to be quickly Connected/Disconnected Reduces Air Accidental Disconnect Specification: Material: Brass Wire outer diameter: 8mm/0.31inch Insert pipe outer diameter: 4mm/0.16inch Insert pipe inner diamete: 2.5mm/0.1inch Spanner wrench suitable for: 8mm / 0.31inch Color: Silver Package includes: 1 piece of air line Hose adapter