Crafted for accuracy, this ruling pen features an adjustable mechanism that lets users control line thickness effortlessly. The durable construction and smooth ink flow make it suitable for technical drawings, watercolor masking, and detailed illustrations. A reliable tool for achieving clean, consistent lines in various artistic endeavors. Features -Color:Multi -Material:Metal, plastic -Size:14.50X1.00X0.50cm/5.70X0.39X0.20in -Professional precision: achieve line accuracy with this pen, ideal for technical drawings, sketches, and detailed illustrations -adjustable line width: the adjustable nib design adapts to your needs, enabling both fine and for diverse artistic applications -Innovative duckbill design: the structure ensures consistent ink, minimizing interruptions and maximizing productivity -Universal paper compatibility: suitable for various paper textures, for drafting or completing artwork -Enhanced masking capability: perfectly complements masking fluid pens, allowing for precise coverage and intricate designs in watercolor and mixed media art Package list: 6 x Ruling Pen