For use with edding 28, 29, 250, 260 360, 361, 363, 366, 620, 660 and 663 whiteboard markers. Simply place the boardmarker tip into the refill ink and after a few moments that marker is ready to use.

Will refill up to 20 markers.

Simply stand the marker nib downwards in the refill bottle for at least an hour, or ideally overnight and the marker is ready to write again.