... drawing welcome Products Details Available Material1.Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420,etc. 2,Steel:C45(K1045), C46(K1046),C20,etc ... DIN,JIS,ANSI,BSW Manufacture ProcessHeading/washer assembly/Threading/Secondary machine/heat treatment/plating/Anti-slipping/Baking/QA/Package/Shipping Warrantywe ... confirm our goods will satisfy yr request of 100%,and have 18 month warranty