Markers display 2 colors with one stroke! When applied, the ink naturally separates and creates a colorful outlining detail. Perfect for a wide variety of writing projects, journaling, and more. Add some pizazz to your hand lettering and art projects with bright, beautiful details. Markers are great for both light and dark surfaces, and work best on heavy weight paper. Colors include azure, black, blue violet, green, hot magenta and red. For best results, shake well and prime each marker before use. AP Seal, non-toxic.