This set of fine tip permanent marker pens from Pentel boasts waterproof ink, making them perfect for a variety of uses. The medium nib ensures precise lines, while the black ink adds a bold touch to any project. These markers are ideal for use in the office, classroom or at home. With no need to worry about the ink smudging or running, you can be confident in the quality of your work. Available in black, blue and red ink colours, this set of permanent markers is an essential addition to any stationery collection.