Size:1/4 3/8(12Pcs)Features:Ideal Starter Kit Of Fittings To Quick Release. Manufactured In Hardened Steel Treated Thermally For Added Strength And Durability. Zinc Plated Finish For Corrosion Resistance. Rust And Corrosion. The Couplers At Spring To; Quick Release For Side Use Of The Compressor Have A Built-In Valve To Shut Off The Air When Changing A Tool. Easy To Use To Use, Simply Slide The Collar Back And Insert The Fitting, Then Slide The Collar All The Way Back To Lock It In Place. Allows Tools And Airlines To Be Quickly Connected/Disconnected. The Female Connection Has A Valve To; Inside To Prevent Air From Escaping During Tool Change.Features:Thread Type; Quick Release: 6.35Mm Bsp. Connector Shape And Length: Uk Style Resistance To Temperature: -20-107C. Withstand Voltage: 150 Mpa.Contents:1 Female Coupler To; Quick Release With 0.6 Cm Bsp Male Thread. 1 Female Coupler To; Quick Release With 6.35Mm Bsp Female Thread. 1 Female Coupler To; Quick Release With 3/8 Bsp Male Thread. 2 Male Fittings With 6.35 Mm Bsp Male Thread. 2 Male Fittings With 6.35 Mm Bsp Female Thread. 1 Fitting Male With 3/8 Bsp Male Thread. 1 Male Connector With 3/8 Bsp Female Thread. 3 Male Connectors For 6 Mm, 8 Mm And 10 Mm Hoses.