- Seat tube clamp chain guide, prevents the chain from dropping off the upper side.
- Seatpost diameter 35mm (With ø31.8mm to ø35mm shim)
- Compatible: fit bike with 1x drivetrain systems
- Material: Alloy 6061-T6,Plastic top guides.
- Extremely easy to install and adjust using a single 4mm Hex tool, without removing your cranks.