This a raspberry pi 5 inch screen case in the form of a stream deck. In the front plate, there are spaces to insert m3 nuts. You just pause the print and insert the nut. I might have added a pause in the print profile but I'm not sure. You also use m3x12 screws to attach the two pieces together. There is also a spot to at adhesive on the bottom so that the print won't move around on slick surfaces.