SHIMANO DEORE CS-M6100 12-SPEED CASSETTEULTRA-WIDE RANGEThe cassette you use on your bike has a significant impact on your climbing ability and performance. With a larger low gear, you'll be able to climb steeper hills with ease. The Shimano Deore CS-M6100 12-Speed Cassette is designed for trail mountain biking. It features Shimano's Hyper Glide+ technology that provides better chain engagement, stronger retention, and smoother pedaling. This cassette is only compatible with Shimano Micro Spline freehub bodies. Features Compatible with Shimano Micro Spline freehub bodies10-51T cassette designed for 1x12 drivetrains only Hyper Glide+ technology provides better chain engagement, stronger retention, and smoother pedaling Specifications Cassette Body Type Shimano Micro Spline freehubs Cassette Cogs10-12-14-16-18-21-24-28-33-39-45-51TDrivetrain Speeds12Cassette Material All Steel Cogs Weight N/A | Shimano | Deore Cs-M6100 12 Speed Cassette 10-51 Tooth