Park Tool CC-2C Chain Wear Indicator Men's Clothing-Swim Using a patented design that

Using a patented design that suspends the helmet just slightly off the top of the skull

anti-microbial brow pad

Fewer blisters thanks to the specially developed mid-layer

To alleviate poor shifting and uneven drive train wear

For a stable

Park Tool CC-2C Chain Wear Indicator Men's Clothing-Swim Using a patented design thatTo 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 pins into two links, press the swing arm gauge tight, and then check the gauge window for an accurate reading. The CC 2 is 10 and 11 speed compatible. For the modern 9 and 10 speed