The right choice for every material. Most permanent markers eventually reach their limits and do not mark equally well on all materials. However, the Edding 300 is different: this permanent marker writes on metal, plastic, glass, wood, fiber, or even concrete. The Edding 300 is therefore the perfect choice for labeling, marking, and identifying almost all materials. With a line width of 1.5 to 3 mm, it produces waterproof and abrasion-resistant texts and drawings. Write on whatever you want!.