These Crayola Take Note Markers are suitable for use on whiteboards and are quick to dry but still easy to erase. Each marker features an ink level indicator so you'll know when to buy more and is low in odour making it suitable for use in classrooms. Each marker has a 2 mm bullet tip. The dry-erase ink is suitable for use on whiteboards. The ink is designed to dry quickly to prevent smudges and smears. The markers have round barrels that are easy to grip and hold. The indicator built into the marker lets you know when the ink level is running low. The ink is non-toxic and low in odour for added peace of mind. There's an assortment of colours included in this pack. There are 4 markers in this pack.