Introducing Adam’s H.A.T. (Hanger Alignment Tool). This small but handy tool is simply an ultralight, emergency derailleur hanger alignment tool for repairing hangers damaged during a ride.

However, derailleur hangers bend easily due to their precarious ... Although it‘s pricier than the Park Tool DAG-2.2 (the alignment tool used in many shops), the HAG’s precision and size ...

“Aside from the usual things like a good set of hex wrenches with a ball end on one side, I’ll mention a derailleur hanger alignment tool (Park DAG-2, $60 USD). For the 10- and 11-speed systems, ...