The title says it all. It's a parametric wrench created in OpenSCAD. As given, this should be compatible with LEE 7/8-14 o-ring style locknuts, though it can be configured for other designs/sizes as can be generated with my locknut generator.
I printed this in junk resin that expired 3 years ago, but it's adequate for a tool that shouldn't really need to exist anyway.
The included STL file is intended only for the web-preview. It's likely that the printer compensation will be inappropriate for your process.
For printable locknuts that fit this, see: https://www.thingiverse.com/thing:6233564
Category: OtherThe author marked this model as their own original creation. Imported from Thingiverse.