This is a casing for the Raspberry Pi Zero W + Zero W Camera. Clip in the Camera than put in the Zero W. Screw with some M3 screws.

Here you can find an magnetic holder to attach the casing to a 3D Printer: https://www.thingiverse.com/thing:2761022

Edit: Just to clarify this is for the Pi Zero Cam not the standard Pi Cam there are plenty of housings for the Pi Cam out there.