These Faber-Castell Whiteboard Markers are suitable for use on whiteboards, fridges and other dry-erase surfaces. Each marker has a 2-in-1 design featuring a different colour at each end. The caps each feature a built-in magnet so you can keep them close by when not in use. Each marker has a bullet 2.0 mm nib size. The ink is water-based and designed to dry quickly to prevent smudges and smears. Each marker has a magnet in the cap so you can keep them handy nearby. There are 4 markers in this pack, each containing 2 ink colours, totalling to 8 different colours.