Decorate and paint arts and craft projects with these acid-free opaque, pigmented water-based acrylic paint markers. They have a 3-way chisel tip that can produce thick and thin lines. They work well on wood, plaster statues, foam projects, walls, paper craft, terra cotta and more. The Primary Set includes black, green, blue and red. The Bright Set includes red, yellow, violet and pink. The Metallic Set includes metallic green, metallic blue, silver and gold.