Park Tool OBW-3 Brake Wrench
The Park Tool OBW-3 Brake Wrench is designed to install and adjust side pull and dual pivot brakes. Its unique offset design and thin profile allow it to access tight places where standard wrenches would be impractical.
The OBW-3 features a 14 mm open-end wrench and a spring holder tool for engaging the brake tension spring that is accessible on some side-pull brake calipers.