7E8 is perfect for really hard work. Reinforced chain links transfer the torque from the e-bike drive with minimal loss. Thanks to the narrow width, this model can be combined with a chain glider. - Reinforced chain links transfer the torque from the e-bike drive with minimal loss - Compatible with Single speed E-Bikes and all narrow hub gear systems - Narrow width works well with systems running chain guides - Case hardened pins for additional strength - 124L = 485g *Not intended for use with derailleurs - For use with single cog and internal hub gearing only