Amazing Dual-Color Effect: The double line outline pen can be automatically created a dual-color effect due to our unique technology. What surprises you most is that the border of metallic silver color is surrounded by different colors of pen you use when drawing the picture. The ink adhesion with bright colors and well-defined lines make it easy for you to use.
 ◆ Diversified Vivid Colors: There are 12 colors of these self-outline metallic markers for you to choose from. Each pen is equipped with two different colors for you to mark. You can depict the letters in different colors with these dual color pens, thus adding a lot of fun to writing and drawing.
 ◆ Safe For Everyone: The double line outline pen metallic markers have already been proven to be 100% non-poisonous and odorless, thereby living up to safety standard. The ultra-fine tip made from nylon is fast-drying and fade-resistant.
 ◆ Easy To Use: You should shake the outline markers well enough to mix the ink with the tip upwards before use. Then take off the pen cap and gently press the tip down on the surface of paper for a while until the ink flows back to the tip. 【Tips: In order to achieve the best results, please cover the outline markers with caps right after use and place them horizontally. 】
◆ Perfect Gifts: AGPTEK Double Line Outline Pens are great for making all kinds of DIY stuff, such as gift cards, greeting cards and Christmas cards, Craft Projects, Scrapbooks, Posters, Paintings and DIY Journal, Rock Paintingand etc. Notice: Please note that paper that weighs above 80gsm is recommended to be used, otherwise, a minor scratch would be appeared on the paper. It is appropriate to light-colored cardboard paper.