This is a mount for the SunFounder 7 Inch Raspberry Pi Touchscreen for 3030 aluminum extrusion. Used here on my Ratrig 3D Printer. It can be mounted in 4 different orientations for easy positioning and then full tilt.
You will need two M6-12 bolts and drop in nuts for the extrusion as well as a ¼-20 or 6mm bolt (1-½ or 40mm long) and a securing knob. The screen takes four M4 x 8mm screws.
The mounting pattern is 75mm evenly spaced.
The screen is available on Amazon: https://amzn.to/3DHuNf2
The author hasn't provided the model origin yet.