... steel metal custom cuff linkswww.badge-logo.comwww.badge-logo.com.cnProduct Infomation:1) Material & process :Zinc alloy, brass,iron,copper ... .5mm,3mm,3,5mm,4mm,5mm etc(up to customer's request)4) Electric-plateing:gold,anti-gold,silver,anti-silver ... .Sincerely,Anny Striking zinc alloy,gold plating,nickel fashion men's cuff links