Park Tool CC-3.2 Chain Wear Indicator SOFTGOODS 1" (53mm) to keep your

1" (53mm) to keep your bike upright and secure

Whether racing or riding

Every detail of the CS-R9200 is engineered for riders who demand the fastest possible shifting and maximum drivetrain efficiency

90 mm (40 cm/42 cm) or 110 mm (44 cm)

Park Tool CC-3.2 Chain Wear Indicator SOFTGOODS 1" (53mm) to keep yourA 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.