12 colors! Opaque paint markers write nearly anywhere -- on glass, stone, plastic, ceramic, paper, wood, and more! Fine 0.7mm bullet tip. Each marker is 5 1/4" (13.34 cm) long. Great for crafts. Fast-drying. Water-resistant once completely dry. TO START PAINT FLOW: Gently shake marker. Uncap. Press tip down against a surface until paint flows to tip, then draw. Recap marker right away when finished