MicroSHIFT Kassette R10 - 10-speed, 11-28TH Series 10 Speed Cassette 11 28 H Series cassettes are designed to deliver maximum durability. With all steel construction and multi stage heat treatment, these cassettes will stand up to whatever you can throw at them, whether its high torque E bike usage or just good old fashioned mashing. Features. Compatible with standard HG cassette hub bodies Continuosly molded cogs achieve a high standard of durability and straightness Group R10 Speed 10 Speed