... , zinc alloy, stainless steel, (with 304 imported steel materials imported from Japan) Style: no pattern, engraving, carving patterns, single-sided, ... zinc alloy, stainless steel, (with 304 imported steel materials imported from Japan)no pattern, engraving, carving patterns, single-sided, double-sided ... -class products and perfect after-sale service, thank you! best-seller Metal steel double cap rivets