Description:Double Line Outline Pens Adopted the pigment ink, these incredible self-outlined markers write in vivid metallic silver surrounded by colored borders. Unique technology produces outlines for you automatically to create a beautiful dual-color effect12/24 Glitter Colors Available in 12/24 different colors containing shiny ink, which yield a vivid color and add a sparkle luster. Also suitable for almost any surface, such as metal, pottery, wood, rubber, glass, plastic, stone, etc.Durable 2mm Tip Double line outline pen specially designed with a wear-resistant and pressure-resistant tip, that helps to achieve fluid and smooth clear writing effortlessly across the page. The pigment ink is waterproof, chemically stable and UV resistant. Our ink lends itself to a smooth application that dries quicklyEasy To Use First shake the marker well to mix the ink with the tip on. Then take off the cap and gently press down the tip on the surface a few times to pump the ink until it starts to flow. For best results, re-cap the markers immediately after use and store horizontallyWide Application Our outline pens can be used in writing a greeting card, scribbling, poster making, drawing and highlighting. Besides, they are also suitable for kids or adults DIY craft projects. Great for arts, crafts, school projects and more.Specification:Material: PlasticSize approx .14.7 x 13.8 x 1.4cm / 5.8 x 5.4 x 0.6inchPackage Includes:12/24 Pieces Double Line Pens (Optional)