SHIMANO Tourney CN-HG40 chain is designed for precise index shifting on 6, 7, and 8-speed. >>Hyperglide 8-Speed chain (works with modern 6, 7, and 8-speed bicycle drivetrains) >>HG chain provides precise HYPERDRIVE SIS/DUAL SIS positioning and shifting. >>Optimized chain for HG sprocket which provides a fast and precise rear shifting performance (especially during downshifts) >>The CN-HG40 chain meets durability requirements for E-MTB applications. Specifications: Brand:Shimano Series:TOURNEY Drivetrain Speeds:6/7/8 Speed Links:116 Pin link plate:Gry Roller zipper plate:Brown Weight:Ca.320g Chain Connection Type:Quick Link Note:Can be used with IG (Interactive Glide) cassette but not IG chainrings