Our aluminum cam-locks are manufactured from aluminum alloy 384 (JIS grade ADS12) and feature type 316 stainless pins, forged brass handles, and plated steel finger rings. G65 couplings fit Commercial Item Description (CID) #A-A-59326B for sizes 3/4" to 6" and will interchange with other couplings that meet this specification. No government standard has been established for 1/2", 8" and 10" so different manufacturers' couplings may not interchange in this size. Female couplers are supplied with locking clips and standard gaskets are rated to 105°C (221°F). G64 fittings feature a collar that, when used with G3F crimp ferrules, locks the coupling to the ferrule for extra fitting retention. Please note, cam-locks should not be used with compressed air or other compressed gases.