The SLX CN-M7100 12-Speed Chain gives you an improved engagement and chain retention and is compatible with Shimano s new 12-Speed drivetrains.New drive system dedicated design chainExtended inner plate improves chain engagement and retentionQUICK-LINK connecting & removing pliers (TL-CN10)Reduced shift times and pedalling shockQuick assembly tool QUICK-LINK connecting & removing pliers (TL-CN10)It features an extended inner plate that improves chain engagement and retention and uses a quick link connection for easy maintenance.  The proprietary design ensures super smooth shifting and reduced pedal shock alongside reduced shift times.