effective solution to an all-too-common problem. It allows you to easily set your brake and shifter levers at the same height on your handlebars. It does this by temporarily replacing your headset's ...
The Park Tool DAG-3 Derailleur Hanger Alignment Gauge ...
is designed and built to be light, accurate and versatile. The sliding indicator can measure derailleur hanger alignment against bicycle rims of any size, and rotates out of the way to clear ...