... (keys) 2.materail:carbon steel,stainless steel 3.passed ISO 9001,ISO 9002 Flat keymaterial:carbon steel,stainless steel all sizes are avaliable ... .Plain Key(keys)2.materail:carbon steel,stainless steel3.passed ISO 9001, ISO 9002 4. surface:black,phosphated,zinc plated and so on ... days Welcome to visit us!Company: Suzhou Jinyike Metal Product Co.,Ltd.Website: jykcn.en.alibaba.com flat key