Road version, 12-speed cage
Compatible with Shimano, Ultegra R8100-8150, Dura-Ace R9200-9250
Not compatible with 11-speed version and the new Shimano 105 Di2 12-speed
Cassette with a maximum of 34 teeth for optimum gear changes
Carbon fiber cage, 7075 aluminum gears and sealed all-ceramic ball bearings
Weight: 68 g