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Feature
Compatible: fit bike with 1x drivetrain systems, seatpost diameter 34.9mmVery light, Material: Alloy 6061-T6,Plastic top guides, Weight: 76g
Seat tube clamp chain guide, prevents the chain from dropping off the upper side.
Spec: 34.9mm (With 34.9mm * 31.8mm shim)
Color: Black