New (In Box) Shimano Ultegra CS-6800 11-23t Cassette
11-speed Super Narrow HyperGlide compatible cassette with
special-coated steel cogs for precision and durability (not compatible
with HG 8-10sp freehubs)
Shimano Ultegra 6800 11sp cassette, 23
cogs:11,12,13,14,15,16,17,18,19,21,23
Shimano part #: ICS680011123
436460
689228106727