1.Fittings set:long life time and good quality 2.ccc.ISO, ... .Extensive use 5.DIN,SAE standand 3,4,7 pieces fittings(bolt,axis nut,cutting ring,axis sleeve,connector): we specialize ... nylon hose and other hoseesAbsolutely approve with high precision,suit for auto parts of high standard. Size4,5,6,8,10,12 ... ,14,15,16mm etc fit for the same specs pipes. Connections:male to male,male to ...