The SLX M7100 12-speed cassette saves weight thanks to its Beam Spider construction and offers Shimano MTB drivetrains an additional gear. With the Shimano Micro Spline freehub body and Hyperglide+ tooth profile, these cassettes with 10-45 and 10-51 teeth ensure high-quality shifting performance. Micro Spline reduces weight with a lightweight freehub cassette hub, with the largest chainring having 10 teeth. When used in combination with Micro Spline cassette sprockets and freehub, the designed cassette and chain of the Hyperglide+ drivetrain represent the next generation of MTB touring - with improved speed, shifting efficiency, and smoothness on any terrain. Intended use: derailleur gear. Weight: 520 g. Teeth: 10-12-14-16-18-21-24-28-32-36-40-45 and 10-12-14-16-18-21-24-28-33-39-45-51. Continuous pedaling during shifting is possible. A lighter and stiffer sprocket construction reduces inertia and provides stronger acceleration. 10 teeth as the smallest sprocket are possible thanks to the design of the cassette hub. Type: cassette sprocket. Number of gears: 12. Compatibility: Shimano. Design: cassette.