These Kwik Stix bulk packs in red are great for projects needing certain colors that might need to be replaced quicker than others or for classroom supplies. No cups, smocks, water or brushes are needed, just shake and press the paint pen on your choice of surface to start creating. These paint pens are great on poster paper, cardboard, wood and canvas. Details: Red 0.35 oz. (10 g) net weight 12 packs (12 paint pens per pack, 144 paint pens total) Tempera Dries in 90 seconds Nontoxic Nut, egg and gluten free Multi-surface For indoor use All ages