Ergonomic Design Permanent Fine Line Marker Ideal for Classroom Use

Adopting a unique repeatable ink system, the pen tip seamlessly connects with the ink chamber. One bottle of replenishment liquid can be filled 8-10 times, equivalent to using 20 ordinary whiteboard pens Equipped with a 0.8mm angled fiber pen tip, the water output is uniform and smooth, with low writing resistance, and fast writing without ink. Equipped with replaceable ink cartridges in red, blue, and black No pungent odor, no harmful chemicals such as benzene Even if children accidentally touch it, there is no need to worry. When wiping, there is less dust, creating a healthy and safe writing environment for teachers, students, and office workers.syi