From the Crayola Project line, Metallic Outline Markers have a unique laydown that display 2 colors with one stroke. When applied to poster & foam board the ink naturally separates and creates a beautiful outlining detail. Add special effects to art projects, crafts, and homework assignments. This set includes 4 Metallic Markers (Black, Green, Blue, and Pink) for both light and dark surfaces, with varying outline effects on dark surfaces. Always protect your work surface and use heavy weight paper for best results.