... machine, mould etc. All Snap button made by H65 high quality brass material, nickel free plating, any color is available, MOQ:1000sets, with ... ,zinc alloy,copper,nickel,tin 2)color:plating:nickel free nickel,nickel free pewter,zinc,tin,old silver,gun metal,copper oxide,gold,brass,antiuque ... and sample are welcomed. Any questions pls do not hesitate to ask!!! best price&high quality brass button