... : brass Stem: brassHandle: steelSize:1/2"-21/2"Thread standard: ISO 228 parallel thread Material: C37700,Commercial Forged Brass, CW602N Packing information: Inner ... : brass or zinc alloy ,nickel plated or chromed plated Connect Thread: NPT,BSP,BSPT,NPTF,ISO228,BS21,Compression Endbrass ball valve ...