Usage Tips:Product Description 3-in-1 Design: With a magnet-designed whiteboard pen, you can easily and effectively remove writing/drawing, and the fine point marker (1-2mm) rolls smoothly on the smoothest surfaces such as whiteboards. Smooth and clear. Erasable whiteboard markers can also stick bras to whiteboards, refrigerators or metal surfaces, very easy to use and store Widely Used: 20 classic whiteboard pen sets, high pigment ink is bright and vivid, and can be clearly seen even from a long distance. Whiteboard dry erase markers can be used for a variety of purposes, such as whiteboards, blackboards, windows, bistros, glass, porcelain, etc. Dry erase markers are perfect for schools and offices Easy to Wipe: The whiteboard pen is designed with an eraser and has a magnet, which helps the whiteboard pen adhere to the whiteboard surface. It also allows the chalk to be placed directly on the refrigerator and never lost. The medallion on the black whiteboard pen contains a small eraser, which is easy to clean, helps keep the whiteboard clean, saves space and removes writing marks : The dry pen and eraser use a unique ink formula, which is non-toxic, low-odor and harmless. Dries quickly after writing, does not bleed through, and does not stain the page. The whiteboard pen and eraser set is perfect for everything from family schedules and housework to home office announcements, classroom learning, or business presentations Washable pen size: 11.5*1.3cm, 20 eraser pens, sufficient quantity for easy use and replacement