This is a wire retention clip that goes in the lower parts of the arm for my EleTab Dual Monitor Mount Stand. These clips became brittle with time and broke. The shape is fairly complex for such a small device and it took me some time to reproduce. This isn't an exact copy of the manufacturer's original clip but close enough to work fine. I printed in PLA but that's probably not the best choice. You want strong and fliexible with decent finsih. Nylon would probably be good but I didn't have any. But hey, I can always make more if the PLA ones break.

Product this is intended for:

EleTab Dual Monitor Mount Stand Full Motion Swivel Gas Spring LCD Arm Fits for 2 Computer Screens 13 to 32 inches - Each Arm Holds up to 19.8 lbs

https://www.amazon.com/gp/product/B07BGY363B/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1