Simplex Roller ChainDIN 8187 Simplex Roller ChainDIN 8188 Roller Chain with single sidedirver link (M1x1)narrow version Roller Chain width double sidedirver link (M1x2)narrow version Roller Chain with single sidedirver link (M2x1)wide version Roller Chain width double sidedirver link (M2x2)wide version Roller Chain with single sideangle bracket (K1x1)narrow version Roller Chain width double sideangle bracket (K1x2)narrow version Roller Chain with single sideangle bracket (K2x1)wide version Roller Chain width double sideangle bracket (K2x2)wide version