Set includes 12 pieces of dual-colored pens: yellow, sky blue, green, dark black, purple, blue, gold, pink, orange, light pink, red and gray. These markers produce a silver metallic texture that are automatically outlined by a vibrant colored border. You no longer have to worry about smudges and blots with these pens. Their quick drying ink is non fading and water resistant so you don t have to worry when writing. Add some sparkle and shine to your writing, lettering, drawing, scribbles, notes, signature and more with these double line markers! Turn the tip of the pen up and shake the pen holder. Press the tip down for a while on paper until the ink flows to the tip. For best results, re-cap the marker pens Immediately after use and store them horizontally.