The item is a set of art ruling pens. These fluid line pens are nice tools for drawing diagrams or drawing lines. Use the fluid line pens to draw precise lines with and even thickness. Suitable for painters, , artists, children who practice painting, and adults. Feature -Color:Assorted Color -Material: Metal -Size: About 13.00X0.60X0.60cm/5.11X0.24X0.24in -Artistic drawing tools: These fluid line pens are nice tools for drawing diagrams or drawing lines. -Great effects: Use the fluid line pens to draw precise lines with and even thickness. -Adjustable design: The width of can be controlled by adjusting the screw. - : The tip of our art rule pens are made of metal, which is easy to ink out and reusable. -Applicable people: Suitable for painters, , artists, children who practice painting, and adults. Package list: 3 x Art Ruling Pens