Summit couplings are manufactured to the new ISO 16028 standard which guarantees: Interchangeability with other couplings made to ISO 16028 standard Dependable quick coupling operation that can be used in high operating pressures and high flow rates. Long lasting performance Interchangeable with: SUMMIT FF Series Male: FF12M-08N Female: FF12F-08N Parker FE Series Male: FEM-502-8FP Female: FEM-501-8FP Safeway FFE49 Series Male: FFE491-4 Female: FFE495-4 Faster FFH Series Male: FFH08 12NPT M Female: FFH08 12NPT F Eaton Aeroquip FD89 Series Male: FD89-1002-08-08 Female: FD89-1001-08-08 Snap Tite 74 Series Male: 74N8-8F Female: 74C8-8F Stucchi FIRG Series Male: 800801007 Female: 800801006 Dixon HT Series Male: HT4F4 Female: 4HTF4 DNP PLT4 Series Male: FF-HPG-08-08N-NPT Female: FF-HPG-08-08C-NPT Tomco FE Series Male: EP4-26 Female: EC4-26