The Artline 70 is a bullet tip permanent marker with an extra strong aluminium barrel. Bullet writing width of 1.5mm. Artline 70 marker contains a safe Xylene free alcohol solvent based ink, which is quick drying and water resistant. These markers are suitable for use on most surfaces including paper, cardboard, plastic, metal and glass. Artline 70 markers can be refilled with Artline ESK-20 Marking Ink.