Cover for Park Tool CCP-22 or CCP-44 crank puller

In the world of niche products, this is a winner. Can't imagine many folks will have a need for this one. I've got two of the Park crank pullers, and one of them goes in the toolbox that I keep in the car. Thing is, I like to keep tool threads clean and well lubed, but sitting in a toolbox this might not stay clean, so I decided to make a cover to keep it clean when it's not used.

Remixed from a Nut Job M22x1 25mm long nut - I then removed the surfaces for the wrench flats and extended the ci