Material: Iron/brass/copper/zinc alloy Colors: soft enamel/resin enamel/printing Original: Zhejiang Yongjia bluesky Dress Button Co.,Ltd1) Material: Iron, bronze, brass, pewter alloy, zinc alloy2) Colors: soft enamel, resin enamel, photo etched, printing3) Plating: (Shiny finish) nickel, brass, gold, silver (antique finish) anti-nickel, anti-gold, anti-silver, (mat finish) mat nickel, mat gold, ...