1.JB-014 2.metal jeans button 3.Eco-friendly,pass oeko-tex,pull test 4 thick brass,good quality Recognised in the world -----Dr. ButtonBE FROFESSIONAL, BE TRUSTED!! metal jeans buttonITEM CODEJB-014MATERIALalloySIZE18-30mmCOLORnickelADVANTAGE1.In stock 2.No MOQ, if have stock 3.free samples 4. Eco-friendly, washable, dry-cleaning, lead-free, nickel- free other series available