Good marker but in my opinion, it writes thickly on the second refill! So it's better to get a new marker instead of refills!

We have been using these markers for 2 years now. Good quality, easy replacement of the refill, and excellent lifespan.

The marker writes nicely and smoothly, but if I leave the board without cleaning it for a certain period of time after the lesson (a few hours), the ink does not completely come off with the first wipe of the eraser. I was thinking that it might be an issue with the board, but I used another marker, made in Germany and cheaper, without experiencing such a problem. Also, the ink refills are very expensive. I prefer to buy a high-quality refill in a bottle and refill my markers with it (Pilot markers cannot be refilled this way) whenever needed. It lasts much longer. Lastly, something purely subjective, the markers are much thicker compared to others.