Bought these for a project I was working on. They are perfect cubes, and hold a good amount of ink (50 ml). They came with enough ink for me to swipe with a brush and do a small swatch card to see what the ink looked like. That was a nice bonus. The leftover ink rinsed out easily, the label was removed with little trouble, and now I have a perfectly-sized clear & empty bottle. Or six of them. It's my fault these are sold out now, sorry! Anyway, fast shipping, and well packaged by the Anderson team.