The Artline 90 Permanent Marker is ideal for marking a variety of porous and non-porous surfaces including steel glass cardboard and wood. It has a chisel tip so you can attain broad and fine strokes easily. It's a great option for adding to your school list when preparing for the next year ahead. This marker has a chisel nib so you can attain a 2-5 mm line width. It is suitable for a variety of surfaces including cardboard wood steel and glass. This fibre tip marker is xylene free waterproof and instant drying. The colour of the ink is black.