The Nobo Glide Drywipe Black Markers are perfect for use within a school classroom when teaching or during a presentation within an office environment. They are guaranteed for long lasting use and two different options are available, either a fine 1mm bullet tip or a standard 3mm for precise and accurate writing or drawing on a whiteboard everytime. The tip was designed for effortless glide movement everytime. This pack has 12 black drywipe markers ensuring long lasting use.