QUICK COUPLINGS, CAMLOCK, GROOVE COUPLERS. Size : 1/2 -6 (Mil-C27487 Spec.) Materials : Stainless Steel ASTM A351-CF8M, Stainless steel ASTM A351-CF8 Carbon Steel ASTM A216-GR. WCB Aluminum Alloy, Bronze. * Type A : Male Adapter / Female Thread. * Type B : Male Coupler / Male thread. * Type C : Male Coupler / Hose Shank. * Type D : Male Coupler / Female Thread. * Type E : Male Adapter / Hose Shank. * Type F : Male Adapter / Male thread. * Type DC : Female coupler / End Cap. * Type DC : Male Adapter / End plug