Shimano TL-CN42 Chain Wear Indicator Tool Replace Images Helps prevent further damage in

Helps prevent further damage in crashes

Perfect for mechs

but they are great for keeping loose ball bearings under control if you need to remove them

Valve cap type: Plastic

Shimano TL-CN42 Chain Wear Indicator Tool Replace Images Helps prevent further damage inThe Shimano TL CN42 Chain Wear Indicator Tool is a must have in your tool box. This tool is easy to use and understand so there'll be no question when your chain is due for replacement. Who's this item for: Workshop mechanics and home enthusiasts. Chain compatibility: This will work with 7 12 speed chains. How does it work: There are pictograph instruction on the side of the TL CN42. The two steps are as follows: Drop the 'split section' labeled with