Designed specificly for use with E-Bikes ISO-conforming upper slider keeps your guide on and your clothing out of your drivetrain Carbon-injected backplate delivers ultimate strength in a lightweight package Mounts Shimano EP8, E8000 and E7000 2-Bolt Nylon Backplate Capacity of 34-38t Includes chainguide, ISCG bolt x2 and user manual. E*SPEC CHAINGUIDE SHIMANO