The Atlas White Board Marker Pen is a high-quality writing instrument that is perfect for use on whiteboards. With a pen thickness of 6mm, this marker provides a smooth and consistent writing experience. Available in four different colors -  black, red, and blue - this marker is perfect for color-coding your notes or presentations. The marker is designed specifically for use on whiteboards, making it easy to erase and re-write as needed. This set includes one marker, making it a great choice for both personal and professional use. Whether you're giving a presentation or just taking notes, the Atlas White Board Marker Pen is a reliable and versatile choice.