I got this and at first I thought why aren’t the sides smooth and shiny like others I’ve seen. Well it’s made on a 3D printer! Amazing!! It works for what it’s intended for. I did have to try a couple slots before some of my tools would fit but that was minor and all got into a space! Same for the area that holds the tips. It has many different size slots and I filled mine with all sorts of items! I added a photo so you can see how much it holds and I have not filled every spot!