12 Speed

MODEL NO:CS-M6100-12 SERIES:DEORE M6100 Series Combination:10-12-14-16-18-21-24-28-33-39-45-51T Combination name (Group name):10-51T Compatible chain:HG 12-speed Speeds:12 Type:HYPERGLIDE+ MODEL NO:CS-M8100-12 SERIES:DEORE XT M8100 Series Combination:10-12-14-16-18-21-24-28-33-39-45-51T/10-12-14-16-18-21-24-28-32-36-40-45T Combination name (Group name):10-51T/10-45T Compatible chain:HG 12-speed MODEL NO:CS-M7100-12 SERIES:SLX M7100 Series Combination:10-12-14-16-18-21-24-28-32-36-40-45T | 10-12-14-16-18-21-24-28-33-39-45-51T Combination name (Group name):10-45T 10-51T Compatible chain:HG 12-speed.