Shimano HG500 10 Speed Cassette, available in 11-25, 12-28, 11-32 and 11-34 gear ratios.

Shimano HG50 10 speed Cassette, 11-36t

Shimano Ultegra 6700 Cassette 10 Spd 12-30t. Lightweight 10-speed cassette with rigid alloy sprocket carrier for reduced weight and better shifting performance, even under the most demanding gear changes.

Shimano Ultegra 6700 10 Spd Cassette 11 - 28t.