– Prevents chain derailment when shifting to inner ring
– Adjustable hose-type clamp fits 1-1/8″ to 1-3/8″ seat tubes
3rd Eye, Bicycling Catalog, Brakes, Chainwatcher, Components, Derailleurs, Drivetrain, Front, Home
3rd EyeChainwatcher
Original price was: $7.00.$2.10Current price is: $2.10.
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