... .Size:M2-M64 2.material:stainless steel,carbon steel,copper,iron 3.Certificate:ISO,DIN,AS 4.Moq:50pcs Lock washer 1 ... .Size: M2-M64 or As request 2.material:stainless steel,carbon steel,copper ... ,GB,DIN,JIS,ANSICetificate ISO9001-2008,SGS,ROHS Function Aatomobile,electronic,mechinery After sale serviceIf there are unqualified,we take full ...