Shimano CS-R8000 Cassette Ultegra - 11 Speed Size:11-28T you can check this by

you can check this by inserting the tip of the tool sleeve into the steerer tube above the star nut BEFORE adjusting the star nut position

Operating usage temp

Two adjustable straps for perfect fit

The PG 1070 Cassette’s semi-spidered design maintains a high level of shifting performance with a matched cassette/chain combination that runs near silent

Shimano CS-R8000 Cassette Ultegra - 11 Speed Size:11-28T you can check this byLightweight 11 speed HG EV cassette with rigid alloy sprocket carrier for reduced weight and better shifting performance, even under the most demanding gear changes. Hyperglide EV sprockets have been designed to reduce weight with improve teeth shaping providing accurate shifting and reduced wear. Features: Hyperglide EV sprockets have been designed to ensure accurate shifting and reduce wear Hyperglide EV sprockets enable the cassette to be lighter