Window blind stopper

Made this becouse I needed a fix, looked on internet for other models but none were to my liking.

It uses M5 insert in bigger part for easier attaching and M5x16 screw. Inner hole can accept up to M5x35, but shutters are not that thick anyway.

Next plan is to make same desing, but for different kind of screw - screw for dry walls and wood, so it does not depend on brass inserts.