Adapters to connect incompatible shifting and braking variants. Those that cannot be factory connected to one socket are given a new chance. This will create the popular beautiful view of the groomed cockpit and more space on the handlebars. ISEV-ISB is for I-SPEC EV derailleur and Shimano I-SPEC B brake MM-ISEV is for SRAM MatchMaker derailleur and Shimano I-SPEC EV brake MM-ISII is for SRAM MatchMaker derailleur and Shimano I-SPEC II brake Weight: MM-ISII - 10.5g | MM-ISEV - 9g | ISEV-ISB - 10g | ISEV-ISII - 6g | MM-MAG - 12g | ISEV-MM - 9.5g | 22 Clamp-ISII - 12.5g | 22 Clamp-ISEV - 10g Material: 6061-T6 aluminum Made in USA Compatibility: designed to mount and work with rear (right hand) brakes and shifters. check with your bike dealer to see what mounting interface you have on your brakes and shifters. MM-ISEV is compatible with M9100, M9120, M8100 and M7100 brakes. The Deore M6100 or M4100 brakes do not allow optimal positioning, so we consider them incompatible. mM-ISEV, MM-ISII and MM-MAG are compatible with SRAM AXS controllers. However, the gear lever further down is at the end of the bar and closer to the grip which is not comfortable for many riders. Hope and TRP brakes are not supported on the Shimano I-SPEC variant. The Shimano I-SPEC EV brake option for use with Magura brakes is not supported due to geometry issues. The ISII-22 adapter is compatible with Shimano XT M8000 and XTR M9000 shifters. However, it is not compatible with Shimano SLX M7000 derailleurs. Tighten the ShiftMounts to max. torque 1-2 Nm.