It's a camera case for raspberrypi zero boards with an integrated M12 mount for CCTV lenses. If you don't want to use a CCTV lens, the shroud is short enough to not impede the normal camera lens field of view.
After using several other cases, mounts, and styles -- I broke down and made my own because I'm picky.
**Features** * Captive SD Card. * Sliding case back, with detents to hold it closed. * Go-Pro style mount * M12 CCTV Mount * LED holes for the camera recording light, and the pwr / act light on the pi Zero. * Horizontal orientation of the pi board, so that the power exits _at the bottom_ instead of torquing the mount / housing and leaving a cord sticking out the side all wonky-like.
Update 11/28/2017: I switched the design to use screw holes for the camera board after having issues with the camera board moving slightly on the pegs. I had hot-glued the board in place, and the glue relaxed, causing the camera to lose focus. Four M2x3 screws should work well with the current design. The scad file has the original pegs commented out. Feel free to tweak and give feedback.