Description The art ruling pen tools can provide you with create beautiful straight lines to meet your professional painting needs. With these pens, you can be creative and creative and draw beautiful designs. You can control the line width by adjusting the screw, tightening, or loosening. Feature -Color: As shown -Material: Metal -Size: About 13.00X0.60X0.60cm/5.11X0.24X0.24in -Multiple functions: Designed for fine line drawing, technical drawing, cartography, and calligraphy. -Adjustable design: You can control the line width by adjusting the screw, tightening, or loosening. -Applicable people: Suitable for artists, painters, cartoonists, and people who practice drawing. -Compatible with ink: Suitable for drawing lines and drawings with ink or other drawing liquid or thin paint. -Warm tips: The pen must be perpendicular to the paper in order to draw horizontal lines evenly with force. Package list: 3 x Art Ruling Pens