Park Tool CC-3.2 Chain Wear Indicator Rennen was the first to

Rennen was the first to introduce Integrated Chainring bolt nuts on our 110mm BCD chainrings

Compatible with long pull brake levers

two black brass ferrules and two black alloy cable end caps

Brake Lever Pull: Long Pull

then passed through aligned vent channels in the EPS and exits out multiple rear exhaust vents

Park Tool CC-3.2 Chain Wear Indicator Rennen was the first toDesigned to accurately indicate when a chain reaches . 5% and . 75% which most chain manufactures recommend replacement. Chain wear indicator is a simple go or no go tool. Updated to be longer, more accurate and features permanent measurement markings Accurately indicates when a chain reaches 0. 5% and 0. 75%, the points at which most chain manufacturers suggest replacement