CC-3.2 Chain Wear Indicator stanley the Alti II GORE-TEX Mitt

the Alti II GORE-TEX Mitt is an extreme cold weather specialist

Designed to fit perfectly in their hiking shoes

Reinforced Hex toecap for abrasion resistance

and you’re ready to go

Two internal zippered mesh pockets

CC-3.2 Chain Wear Indicator stanley the Alti II GORE-TEX MittA 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.