Markal DURA-INK #150 Felt Tip Marker is a felt tip marker with a fine bullet tip used for fine line marking. Marks on metal, wood, cardboard, paper, plastic, glass, etc. Can be used for the identification of parts, layout work, and marking cartons and crates. Its extra tough tip won’t spread or mush and it is smear-resistant, water-resistant and fast-drying.