Permanent marker for fine marking and labeling on almost all materials. The round tip has a line width of 1 mm. Waterproof and abrasion-resistant on nearly all surfaces. The product is refillable with edding T 25 refill ink. The ink is low-odor and free from toluene or xylene. Smaller items like scissors, glue, or other accessories need to be labeled for school. With the edding 400 permanent marker for durable, abrasion-resistant markings, it's that easy. The fine tip ensures precise line width, and the ink can be applied accurately to almost all materials.