304-4 Parker Hydraulic HoseParker's 304 phosphate-ester compatible hose is for medium pressure applications up to 5000psi. Offers the widest size range: -4 through -32. Dimensionally conforms to SAE 100R1 Type AT specification. Uses Parkrimp 43 Series fittings.Up to 5000 psiDimensionally conforms to SAE 100R2 Type AT specificationUses Parkrimp 43 Series fittings, providing the widest selection of end configurations available anywhere