Shimano CN-6600 10 Speed Ultegra Chain 116 LinksShimano Ultegra CN 6600 10 Speed Chains Hyperglide 10 Speed chain Optimized chain for HG sprocket which provides a fast and precise rear shifting performance (especially during downshifts) Chromized rivet pins improve wear resistance Zinc alloy plated outer link surface treatment Ultegra 6600 and 105 5600 chains are recommended for use in conjunction with Ultegra 6703 and 105 5703 triple
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Shimano Ultegra CN-6600 10-Speed Chains
Hyperglide 10-Speed chain
Optimized chain for HG sprocket which provides a fast and precise rear shifting performance (especially during downshifts)
Chromized rivet pins improve wear resistance
Zinc-alloy plated outer link surface treatment
Ultegra 6600 and 105 5600 chains are recommended for use in conjunction with Ultegra 6703 and 105 5703 triple