Protective cap/cover for a steel table leg with two tubes together.
It covers the tip of 1" round table leg(s) with two joined tubes.

I have a mid-century modern table from the 1950s. Each table leg is two chrome tubes, that are parallel and joined against each other. Normal replacement caps won't fit because this is a double-tube.
This design replaces the ones that are damaged and missing.
You might need to expand the photos full-screen to see the ends of table legs.

I had to resurrect my old AutoCAD skills to create this. I'm much more of a Revit guy.