These couplings are ideal for water system, and can also be used in a wide variety of applications such as hydraulic oil handling, chemical processing, gasoline & petroleum products handling etc. The detailed informations are as follows: 1) Material: a) Body: Aluminium Alloy b) Handle: Brass (Forging) c) Ring: Steel ( Zinc plated ) d) Pin: Steel (Zinc plated ) e) Safty Clip: Steel ( Zinc plated ) f ) Gasket: Nitrile rubber 2) Description: These products are made according to US mil-c-27487 or A-A-59326 via silicon sol presision casting process, tooled by CNC machine. Designed for quick connecting and disconnecting of medium - to large- diameter hose lines. Available in male adapter & female coupler configurations. Available with either camlock coupler or NPT /BSP female thread adaptors at the hose connection. 3) Features: a) Economical and durable, excellent corrosion resistance, fair abrasion and chemical resistance. b) Optimizes the connection between adaptors and hose connection, ensuring safe, fast unloads. c) With double bolt clamp,easier to handle. d) Redesigned with a interior "lip" that makes hoop-ups easier. c) Having a very strong resistance property to high temperature and pressure. Standard: DIN EN 14420-7-2005 Pressure endurable: a) Working pressure: 1.6Mpa b) Test pressure:2.4Mpa Type available: A , B , C , D , E , F , DC , DP Size available: 1/2" , 3/4" , 1" , 1-1/4" 1-1/2" , 2" , 2-1/2" , 3" , 4" , 5" , 6" . We can also offer you Aluminium & Stainless Steel ones. We are the qualified member of NFPA.