
This unusual tool allows you to tighten or loosen large diameter nuts found in certain installation situations, while still having the short leverage needed for tight spots. It has the slight disadvantage of not being able to be tightened to zero where just a slight change would allow it to drop below 6mm. Most of the time this is not a problem. In addition, this tool can save a lot of work, especially with really large fasteners (up to 75 mm or 1.9 inches). This tool has a feature that I wasn't aware of when I first used it. The movable jaw can be fully extended and rotated to grip the tubes themselves.