Set of 8 ultra-fine 0.7mm markers compatible with water-based and oil-based inks. - Brand: uni - Product Name: POSCA - Number of Colors: 8 - Tip Size: 0.7mm - Uses: Compatible with water-based and oil-based inks Used only a few times, but the case has minor scratches. The pens themselves have no problems. I tested the colors, and the color output is fine (see photo ④).