- Tips from renewable material - Filter fibres made from recycled material - edding 21: Bullet tip, stroke width approx. 1.5 - 3 mm - Particularly suitable for labelling, marking and writing on virtually all surfaces (e.g. plastic, metal, glass…) - Smudge-proof, water-resistant, lightfast quick drying ink - Low-odour, alcohol-based ink, with no added toluene/xylene - Refillable with edding MTK 25 refill service - Changing tips now also available of renewable material - Available in black, red, blue and green