Chain jam protector 31.8mm. For use with 50mm chain-line.
1xAnti-Drop Chain Guide Chain Keeper Bike Chain Catcher Bicycle Chain Stabilizer
Bicycle Chain Stabilizer Anti-Drop Chain Guide Chain Keeper Bike Chain Catcher
Deda Dog Fang Chain Drop Guide Bicycle Bike Chain Catcher 28.6mm - Black
One23 Road Bike Chain Catcher 3rd Eye Chain Watcher
Road Bike Chain Catcher Drop Aluminum Alloy Keeper Bicycle Chain Stabilizer
