... cover machine, mould etc. All Snap button made by H65 high quality brass material, nickel free plating, any color is available, MOQ:1000sets ... material:brass,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 brass,antique bradd oxide green,ect.You can ...