hydraulic fitting: 1,material:ss304,ss316,brass,copper 2,size:1/8"-1" 3,standard:ISO9001:2008 ... manufacture: 20#, 1Cr18Ni9Ti, 304, 316, 316L, etc6) The demands for fitting pipes: φ4 toφ427) Cone thread: G, R, GPT, NPT ... -up, no torque transmission.10) Specified specification available upon request Brass ferrule hydraulic fitting cap