Directory
Items
News
About
Resources
Invite
Log in
Register
🇬🇧
EN
English
Español
Borrow CC-3 Chain Wear Indicator
All items from Rockwood Common Tool Library
Measures how much a bicycle chain has stretched over time. The two prongs fit into the chain links. The engraved measurements (.75 and 1.0) indicate the percentage wear.
Provided by:
Rockwood Common Tool Library
View item
Updated: 17 Mar 2026
View item