NOS Shimano Dura Ace 7700 Series 9 Speed Cassette - 11-23 Titanium & Steel

The 21/23 and 17/19T pairs are mounted on aluminium carriers. 2 Titanium sprockets (21T and 23T). 11 - 12 - 13 - 14 - 15 - 17 - 19 - 21 - 23 sprockets.

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