This e*thirteen TRS Plus chainguide-bashguard combo is designed for bikes compatible with ISCG mounts. The adjustable polycarbonate compact upper slider opens without tools for easy access to the chain. The solvent-resistant upper slider has co-molded rubber to keep things quiet. Including two polycarbonate direct mount bashguards, the chainguide protects chainrings ranging in size from 28-34 teeth. Features: Polycarbonate upper slider with co-molded soft rubber for noise reduction, opens without tools Aluminum hardware Solvent resistant polycarbonate 2 sizes of replaceable Direct Mount Bashguard (DMB) included Specifications: Backplate Material: Aluminum Drivetrain Protection: IFD DMB (Direct Mount Bashguard) Chain Retention: Adjustable Slider Capacity: 28-34T Color: Black Weight: 119g (34T) Includes: Chainguide Direct mount bashguard Long ISCG bolts Short ISCG bolts Spacers