3rd Eye Chain Watcher

3rd Eye Chain Watcher 3rd Eye Chain Watcher Chain Deflectors. Prevents granny gear from overshifting Fits 1-1/8" to 1-3/8" round or oval seat tubes Front Derailleur Clamp: 28.6 (1-1/8") , 31.8 (1-1/4") , 34.9 (1-3/8")