Finepoint System Pen is ideal for everything from writing everyday notes, to labeling items, to precision technical drawings. Tough plastic tip resists fraying, so every line is precise. Tip is fitted into a long metal sleeve that allows drawing inside templates and alongside rulers. Water resistant and fade resistant permanent black ink marks on paper, plastic, glass, metal, cellophane, film, wood and more. Pen is disposable so you have no messy ink cartridges to deal with.