Can you help identify what these spacers are for?

[kokos_finds]

I have a small box of these steel spacers and not sure what they are used for.  Each spacer is about 1 inch long and you can screw together as many as you need.  There is a small wrench to tighten the spacers - please note there is a hole in each spacer for tightening.  I believe they might be from an office - but not sure.  Thank you!!

[sigs70]

 Good Evening, just a guess,,,,, they look Spacers for a universal car Antenna the different size and shapes are due to each car having different thread sizes esp on a Universal kit..

Guess 2 , Computer spacing pins used on Laptops or Computers to help spacing airflow esp on Motherboard...

Good luk Sigs70