This is a substitute Vertical window blinds handle.
From the sun the handles of blinds become brittle and and brake.
So i create one replacement part since i was not able to find one on the market easily.
You only need to keep the balance weight, or add you own, from the stock handle.

its better made with PETG or something to withstand the heat.

The stl here is generic , you can find the complete thing here.
https://cults3d.com/en/3d-model/home/vertical-window-blinds-handle