magnetic button manufacture different diameter color: nickle, gold, ect. nomal, supper thin, dish shape material;iron,brass magnetic buttonsize: 10mm, 12mm, 14mm, 16mm, 18mm, 20mmfinish: nickle, gold, anti-brass, ect.design: normal, super thin, dish shapematerial; iron, brasswidely used in bags, luggage, clothes and so on.