EXPO Low-Odor Dry-Erase Marker, Ultra Fine Point, Assorted, 4 per Set Sold as 4/Pack. Consistent, skip-free marking in vivid color. Low-odor, quick-drying ink formula erases cleanly and is ideal for classrooms, offices and home offices. Marks are easy to see from a distance. For optimal results, use on nonporous surfaces such as porcelain or melamine whiteboards and glass.