Like the others, it seems like these wheels were just thrown in a box with a random plastic wrap that doesn't seem to do anything, but other than that they work as expected. At least he was in a double box. Very smooth running with bearings like in the photo, no play. Closes well. I used them to store my baseless Delta table saw and built a custom cabinet. They are attached with Kreg screws. Of course, they're not designed for rolling things outdoors unless they're on a hard, flat surface, but my intended use was for a basement, so it works great without the height of the cabinets and cart as well a small workbench.