KOKUYO Whiteboard Marker Yokumi-L Bold PM-B503 RED Red 1pc

Since you can see the ink level of the cartridge at a glance, you can eliminate the frustration that you do not know the ink level until you write it.
A direct liquid type that allows ink replacement with a cartridge. The replacement time is clear and the replacement method is easy. Perfect for personal equipment for cram school and seminar instructors who always use whiteboard markers.
From the beginning to the end of use, we have adopted dark ink that is clear and easy to see. Since you can write clear letters, it is ideal for use in large conference rooms, schools and private schools.
You can easily replace the pen tip with the included replacement tool. It is economical because the main body can be used repeatedly.