Product Description [3-in-1 Design]: Whiteboard pens are designed with magnets, you can easily and effectively remove writing/drawing, the fine tip (1-2mm) rolls smoothly on most smooth surfaces like whiteboards. Smooth and clear. Erasable whiteboard pens can also be attached to a whiteboard, refrigerator, or metal surface, very easy to use and store [Wide Application]: Set of 20 classic whiteboard pens, the highly pigmented ink is bright and vibrant, visible clearly even from a distance. Dry erase whiteboard pens can be used in various ways like whiteboards, blackboards, windows, bistros, glass, porcelain, etc. Whiteboard pens are ideal for schools and offices [Easy to Wipe]: Whiteboard pens with eraser design with magnets helps the whiteboard pen attach to the whiteboard surface. It also allows the chalk pens to sit directly on the refrigerator and never get lost. The medallion on whiteboard pens black contains a small eraser for easy cleaning, helps keep your whiteboard clean, saves space, and removes writing marks [High Quality]: Dry pens and erasers use the unique ink formula, non-toxic, low odor, harmless. Dries quickly after writing, no ink bleeding, no smudges on the page. Whiteboard pens and eraser sets are great for everything from household schedules and chores to home office messages, classroom learning, or business presentations [Washable Pen Size]: 11.3*1 cm, 20 eraser pens, sufficient quantity for you to use and replace conveniently