The M7100 chain provides enhanced chain retention thanks to an extended portion of the inner plate. This chain features quick-link assembly and SIL-TEC treatment for extended offroad durability. For 2x12 or 1x12 speed drivetrain systemsExtended inner plate improves chain engagement and retentionEasy connection with included SHIMANO QUICK LINK (SM-CN910-12)Reduced shift times and pedaling shockQuickLink is non-reusableProprietary design ensures smooth shifts and strengthCompatible with 12-speed drivetrainPin Link Plate: SIL-TECRoller Link Plate: SIL-TECRoller: SIL-TECLinks: 126Weight: ~ 252 gCompatible with some E-BIKE models (see your chain length specifications)