An indispensable shop tool, the Park Tool DAG-2.2 derailleur hanger alignment gauge measures and straightens misaligned derailleur hangers, solving a high percentage of shifting problems.
Features
Gauge bar is made of heavy-gauge, chrome-plated steel
Adjusts to fit 20 to 29 in. wheels
Threaded tip is replaceable (replacement tips not included)
Large inner shaft adds strength
Tight tolerances offer improved accuracy
Improved clearance and reach to fit more frame/hanger combos than past versions, including low-clearance thru-axle derailleur hangers
Compatible with virtually all derailleur-equipped bicycles, including those with Shimano Direct Mount hangers