PARK TOOL CC-3.2 Chain Checker Gift card and to a special treatment

and to a special treatment that guarantees high-level smoothness and precision shifting

Its microperforated structure enhances airflow

and blocks out damaging rays

so there’s total retention even on bumpy roads

Raw edge hems create a smooth transition from short to skin for a sleek

PARK TOOL CC-3.2 Chain Checker Gift card and to a special treatmentA worn bicycle chain can cause poor shifting and in time can even cause excessive wear to the derailleur and rear cogs, causing a much more expensive problem. That's why bike component manufacturers recommend chain replacement at regular wear intervals. The Park Tool CC 3. 2 is a go no go gauge designed to accurately indicate when a chain reaches 0. 5% and 0. 75% wear (or "stretch"), the points at which most chain manufacturers suggest replacement.