Shimano CN-6600-10 Chain - 10-Speed, 116 Links, Silver/Gray 50off with a snug heel pocket

with a snug heel pocket and a medium instep

It includes the new Third Rail Technology and Algal Sidewall Technology

Softshell lace cover

but still bright enough for plenty of nighttime shenanigans

With a 3D fit nose for added comfort and a frame built to fit most faces from small to large

Shimano CN-6600-10 Chain - 10-Speed, 116 Links, Silver/Gray 50off with a snug heel pocketShimano CN 6600 10 Speed Chains Hyperglide 10 Speed chain Ultegra 6600 and 105 5600 chains are recommended for use in conjunction with Ultegra 6703 and 105 5703 triple 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