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A go/no-go gauge designed to accurately indicate when a chain reaches 0.5% and 0.75% wear; the points at which most chain manufacturers suggest replacement Works on most derailleur actuated chains from 5 to 12speed. However use the CC-4 for SRAM Flattop and T-Type chains Retailers are not permitted to sell on the Amazon.com marketplace unless authorized in writing by Park Tool
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🇺🇸 Ship from USA · On Agora since 2026
$12.95