Shimano Ultegra 8100 12 Speed Cassette

Ultegra 12 speed cassette. Compatible with both 11 and 12 speed Shimano freehubs.

Cassette ratios:
11-12-13-14-15-16-17-19-21-24-27-30
11-12-13-14-15-17-19-21-24-27-30-34