9-speed, aluminum lockring, High Tensile steel sprocket, Shimano HG-M (MTB) compatible, black The HT suffix stands for High Torque, it is specially reinforced for high-torque e-bikes The performance of your cassette determines the quality of your riding experience. That's why we make no compromises on functionality and durability with our Grad.HT cassettes: the sprockets made of particularly strong High Tensile steel are specially reinforced in the HT (= High Torque) version for the high torques of e-bike mid-motors. This means that our Grad.HT cassettes offer greater durability compared to conventional cassettes, which translates to higher mileage (and thus longer maintenance intervals) and longer superior shifting performance. Our Grad.HT cassettes feature special ramped plates that ensure faster and smoother shifting, so you don't have to think about shifting processes and can concentrate on riding. This cassette is suitable for 9-speed gears and has a gradation of 11-32 teeth. The workshop box contains four cassettes. Number of teeth 11, 13, 15, 17, 19, 21, 24, 28, 32 Freewheel body HG-M, MTB Large sprocket 32 inch Main color black Small sprocket 11 inch Cassette mount System compatibility 9-speed Type/kind Item Interchangeable sprocket partially