The Blueprint Clamp Wrench is the perfect accessory for tightening and loosening hanging blueprint clamps. It works with all major manufacturers' hanging clamp brands such as Premium Brand, Mayline, Safco, Planhold, Alvin and Brookside Design.
- Made of blue heavy-duty ABS plastic
- Fits securely over the wing knob
- Requires a minimal amount of effort to securely clamp your blueprints
- Stores on top of a blueprint clamp when not in use