We manufacture various sizes of spring button. It has iron and brass materials. If you have any requirement please contact with us we would reply you as soon as possible. Sheng Yang Enterprise Co., Ltd TEL: 886-4-7614433 FAX: 886-4-7618875 E-MAIL: po.nung@ msa.hinet.net Website: http: / / www.shengyang7888.com/ index_en.html