Handy pen is designed specifically for marking on acetate films, such as overhead projector transparencies and laminated boards. Formulated for intense heat, the fade-proof ink dries quickly, without bubbles or cracks. Durable fine-point tip aids in the production of highly detailed graphics and legible text. Bold, bright colors help your ideas stand out. Marks wipe away easily with a damp cloth. Odorless and nontoxic, Vis-à-Vis products are an ideal choice for use in classrooms and small offices.