The Edding MTK 25 blue ink refill for permanent markers contains low-odour pigment ink. The blue ink refill is in a vial with capillary system, making the re-filling of a marker very simple. You place the permanent marker for at least an hour with the tip down into the vial. After this, the Edding marker is refilled and ready for use.
The Edding MTK 25 is suitable for the following Edding permanent markers:
No. 1, 21, 22, 400, 3000, 3300.