Very similar one(s) here. Not exact same size. Maybe they would welcome a pic of one with your dimensions.
CD 315-334 (Umbrella type high tension - One pice) (allinsulators.com)
Whoa, Rick. Another cool thread I missed. I really should have subscribed to this subforum earlier so I would get notices.
Was these projects you were working on? What's in the last picture?
Remember when people talked about Earth being a big blue marble?
Apparently the big blue marble has a giant steelie in the middle. Trippy.
https://www.cnn.com/2024/07/05/science/earth-inner-core-rotation-slowdown-cycle-scn/index.html