Just purchased this Ultegra CS-R8100 12-Speed Cassette 11-30T. Only used for three rides and decided to go back to my 11-34T. Prefer a 34T over the 30T.

Sprocket pattern is
11 - 12 - 13 - 14 - 15 - 16 - 17 - 19 - 21 - 24 - 27 - 30 T

Retail is $149.99
When you call please mention you found this ad listing on OKz.ca