Shimano 105 cassette, CS-R7000 11 speed

From Shimano:

The Shimano 105 R7000 11 speed Cassette provides precise shift ramping and is a foundation for top-level drivetrain performance. Designed to provide wider gear choices and wider ratios to suit individual rider preference and to provide a range of options to suit the task at hand. Featuring a durable, lightweight construction, which is weather and wear resistant while providing professional level 11 speed drivetrain performance.