At the top right of my setup pic is a Pico. It's a slightly wider version of the 75 that can hold a larger
tank. If you look close you can see the duct tape holding it together.
The Pico 75 has a single piece wraparound metal cover. The top and bottom are metal. There are tiny bolts, 2 on the top and 2 on the bottom. They screw into hollow metal rods that run inside between the top and bottom. It's a pretty robust structure.
The wider one is different. The metal top piece extends down the side over the display, the bottom piece extends up on the other side. In between there's a black plastic piece that goes around the body. That piece gets very narrow as it wraps around the sides. Unfortunately those narrow bits are what holds the top and bottom pieces in place and one of them snapped. Then one of the screws in the top came loose. Took it out and it wasn't a bolt, it was like a tiny wood screw and it had scraps of plastic in the threads. So it looks like there is a plastic block inside with those tiny screws going into it. A bit more fancy looking than the original but a total design fail in terms of holding together. Guess I'll go on using it until it falls apart.