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This is the Park Tool CC-2 Chain Checker. To alleviate poor shifting and uneven drive train wear, manufacturers recommend chain replacement before rear cog replacement. Now you can quickly and accurately determine the wear and stretch of any chain with the Park Tool Chain Checker. Simply insert the Chain Checker’s pins into two links, press the swing arm gauge tight, and then check the gauge window for an accurate reading.
Note: Use the CC-4 for SRAM Flattop and SRAM T-Type 12-speed chains.
This product was added to our catalog on April 25, 2018