Wing nut extender

Sometimes things are tightened with wingnuts which are smaller than we'd prefer. This slides over the bolt and wingnut to make using the wingnut a little easier. This was made to use with a book clamp, but wingnuts are found in other places as well. The center hole has a diameter of 6.6 mm. The slot for the wingnut to go in is 28 mm long by 3.5 mm wide.