Third Eye Chainwatcher anti-chaindrop device Chain Guides
-Color:black
-Prevents chain derailment when shifting to inner ring
-Mounts To Seat Tubes That Have a Front Derailleur Clamp / Seat Tube Size : 28.6 (1-1/8″) , 31.8 (1-1/4″) or 34.9 (1-3/8″)
Mfg. part #: 01
TH-1001
730366010008