Double Line Outline Pen Set Dream Flash Pen Metal Color Marking Pen DIY Hand Ledger Fluorescent Marking Pen 2ml Features: When using it for the first time, it is necessary to the pen tip to exhaust the air, so that the pen can be used normally! Colorful pens have three different writing effects. When you write on light or white paper, two colored and silver lines will appear; If you write on black cardboard, a silver line will appear; When writing on a smooth surface, colored lines will be displayed! Nylon wear- pen tips are not easily damaged. When you are no longer using it, please cover it to ensure that the product can be used for a long time! It can be used for smooth floors, car bodies, paper, smooth walls, automotive glass, ordinary glass, and various smooth sheets. Colorful fluorescent pen set, rich in colors to meet your various needs, you can use it as a marker to mark important content! Product Description: Double line Outline Pen Set Dream Flash Pen Metal Color Marking Pen DIY Hand Ledger Fluorescent Marking Pen 2ml Material: Plastic Color: as the picture shows, (Due to the difference between different monitors, the picture may have slight color difference. please make sure you do not mind before ordering, Thank you!) Please don't let your handwriting get wet! Shake well before use, then gently the tip. Line width: 2-3MM Before continuing your project, be sure to test in a small area to see if it will disappear. If the paint is insoluble in water, use soap or other mild cleaning solution, and do not use markings on absorbent materials as they may leave and shadows. It can be used for smooth floors, car bodies, paper, smooth walls, automotive glass, ordinary glass, and various smooth sheets. When using it for the first time, it is necessary to the pen tip to exhaust the air, so that the pen can be used normally! Colorful pens have three different writing effects. When you write on light or white paper, two colored and silver lines will appear; If you write on black cardboard, a silver line will appear; When writing on a smooth surface, colored lines will be displayed! Nylon wear- pen tips are not easily damaged. When you are no longer using it, please cover it to ensure that the product can be used for a long time! It can be used for smooth floors, car bodies, paper, smooth walls, automotive glass, ordinary glass, and various smooth sheets. Colorful fluorescent pen set, rich in colors to meet your various needs, you can use it as a marker to mark important content!