Aluminum Part C Female Coupler x Hose Shank. These couplers are supplied with locking feature safety clips which may be inserted to lock handles, preventing disconnection during product transfer. Aluminum alloy is specially designed for high tensile strength, lightness and rigidity Locking feature using safety clips to prevent disconnection during use on all sizes except 1/2" Hose shanks specially designed for easy assembly with suction and lay flat discharge hoses Aluminum couplings supplied with brass handles which results in less wear on connecting parts.