Record 10s Ultra Narrow chain that is just 5.9-mm wide. Owing to its dimensions, the new version is lighter and quieter and facilitates adjustment of the rear derailleur. Chain links and pins are hollow so that the chain weighs only 255* g in all.

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Features:

10 speed only 5.9mmm width

Ni-PTFE finish(smoother,quieter, longer wear resistance)

114 Links

Lightened links and hollow pins to save weight .

Weight:255g