The Shimano Deore Microspline CS-M6100 12-speed cassette is made from 12-gauge steel pinions ranging from 10-51 teeth. Because of the unmatched shifting quality of HYPERGLIDE+ technology, you can upshift and downshift according to the load on the cassette, thus making SHIMANO DEORE shifting smoother than ever. The cassette can also be easily combined with higher 12-speed Shimano SLX, XT and XTR group sets. Only compatible with Microspline hubs!