... . OEM is welcome3. Standard: DIN5685 A/C , DIN763 , DIN764 , DIN7664. Surface: electrical galvanized , hot galvanized , white-blue zinc plated , self color , 5. Grade: g30 ... : 2 ,2.5 , 3 , 3.5 , 4 , 4.5 , 5 , 5.5 , 6 , 6.5 , 7 , 8 , 8.5 , 9 , 10 , 11 , 12 ,1312. Din766 link chain: 2, 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ,11 , 12 ...