Park Tool DAG-2.2 Derailleur Hanger Alignment Gauge Brand_Aeroic ELEMNT BOLT allows you to

ELEMNT BOLT allows you to easily zero in on the specific ride metrics that are most important to you

Sole Guards - Replaceable

Over pronation is one of the main contributors to incorrect tracking of knees during a cyclists pedaling phase due to internal rotation of tibia and femur

better puncture resistance while retaining the superb balance of a light riding feel and grip

Park Tool DAG-2.2 Derailleur Hanger Alignment Gauge Brand_Aeroic ELEMNT BOLT allows you toDERAILLEUR HANGER ALIGNMENT GAUGE A misaligned derailleur hanger can cause skipping, missed shifts, and wreak general havoc on your bicycle's drivetrain. The DAG 2. 2 is an indispensable shop tool that can be used to both measure and straighten misaligned derailleur hangers, diagnosing and solving many shifting problems. Compatible with virtually all derailleur equipped bicycles, and adjusts to work with wheels from 16" to 29"+.