... 2- M64;0# -3" 2) Material: RoHS brass,copper,bronze, etc 3) Standard: GB,DIN,BS,ISO,ANSI(IFI), etc ... :5mm-250mm,1/4''--10''matrrial: brass,copper,bronze, silicon bronze, aluminium bronze, nickel bronze, phosphor bronze, manganese bronze,etc.finish: nickel, tin, chrome, zinc, ... which involve in many kinds of matrials, brass, copper, bronze and related surface treatments. TEL:+86-411-39829018 FAX:+86 ...