1. Standard Our Camlock Coupling are made to standard of A-A-59326 ( superseding MIL-C-27487 )or DIN2828 2. Casting method SS: Investment casting Brass: Forging Aluminum: Gravity casting, die casting PP/Nylon: Injection 3. Size From 1/2" to 6"inches 4. Type Types available: A, B, C, D, DC, DP, E, F 5. Body material Aluminum Alloy  or Stainless steel (SS316, SS304), Brass, Aluminum, Polypropylene, Nylon 6. Cam levers We use stainless steel or brass cam levers. 7. Pins, Rings and Safety clips We use steel plated pins, steel plated rings and Safety clips. 8. Threads ISO228(BSP)/ISO7(BSPT)/ANSI B1.20(NPT)