Thread: A Tired Old Chain Question
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Old 08-30-17 | 05:33 PM
  #7  
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Shimagnolo
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From: Zang's Spur, CO
The only valid chain checkers are made by
Shimano: https://www.amazon.com/Shimano-TL-CN.../dp/B00346ZEOE
and Pedro's:
Amazon Amazon

All the rest are junk.
A ruler is more accurate.

Explanation here: http://pardo.net/bike/pic/fail-004/000.html
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