1.latest metal jean rivet 2.non-toxic material 3.certifications 4.manufactory production 5.on-time delivery Name: latest metal jean button Material: zinc alloy, brass Size: 9mm (welcom customer size) Color: racking shinny nickel nickel free, can arrival your target Technology molten casting, polidhing ,electroplating, with enamel Feature: nickel free,fashion Use: garment latest metal jean rivet