1 Set Double Line Outline Markers 12 Colors Glitter Metallic Drawing Pen

Paint on dark/black paper, it shows only silver colours. Unique automatic double line function technology produces outlines for you automatically to create a beautiful dual-color effect. Before opening the cap, First shake the marker well so the ink mixes with the tip, then remove the cap and gently press the tip on the paper for a few seconds until the ink flows to the tip, then start creating.