Hello
I am interested in Dudu's 360-degree cameras but have questions about the installation.
 
I always see videos where the cameras are installed in the side mirrors by drilling the hole and then using a kind of water tank rod to pull the curve.
 
I'm attaching a picture because I don't know if you understand me. The question is, do I need this tool as shown and marked in the picture to install the Dudu cameras in the side mirrors? Or can I do it without the tool?
 

Thank you for the answer