Cassette Shimano M6100 12 speed Cassette 10-51T Shimano CS-M6100 - 12 speed Cassette 10-51T part name: Cassette Shimano M6100 12 speed Cassette 10-51Tpart make model: ShimanoCS-M6100 - 12 speed Cassette 10-51Tbike part approved: