... DIN764,DIN766 and DIN5685 series a,DIN763 link chain: SIZE(MM):2.0 2.5 3 ... stardard,short link link chain,medium link chain ,long link chain and G70 link chain a,short link chain: SIZE(MM:6 ... 8 10 12 16 b,medium link chain ... 8 10 12 13 16 20 24 c,long link chain: SIZE(MM) 5 6 8 10 ... 8 9 12 15 16 19 b,long link chain: SIZE(MM):4 4.5 5 6 ...