Park Tool DAG-2.2 Derailleur Hanger Alignment Gauge AI Dual-roller design frees up the

Dual-roller design frees up the rear wheel to move naturally

Larger driving cogs maximize drivetrain efficiency and create compatibility with both SHIMANO 11 and 12-speed freehub bodies

Adjustment barrel

Replacement CULT bearing kit for Campagnolo Ultra Torque cranksets

Moisture wicking

Park Tool DAG-2.2 Derailleur Hanger Alignment Gauge AI Dual-roller design frees up theThe DAG 2. 2 is an indispensable shop tool that can be used to both measure and straighten misaligned derailleur hangers solving a high percentage of shifting problems. Specifications Gauge bar made of heavy gauge, chrome plated steel Adjusts to fit 20" to 29"+ wheels Replaceable threaded tip Upgraded large inner shaft for added strength* Tighter tolerances for improved accuracy* Improved clearance and reach to fit more frame hanger combos including