- Cartridge Length: Approximately 50 mm; Diameter: 5 mm (0.2"); Bore Diameter: 3.4 mm. - Package includes 10 vibrant pen inks in assorted colors, allowing for easy replacement or customization to suit your creative needs. - Crafted from durable plastic and high-quality ink, ensuring both longevity and a smooth writing experience. - Enjoy ink that flows effortlessly, dries quickly, and offers rich pigmentation for bold, clear writing. Use Scenarios: - Perfect for artists and students who require reliable ink for sketching, note-taking, or journaling. - Ideal for professionals needing a consistent ink solution for everyday tasks, such as signing documents or writing reports. - Great for DIY projects or crafting, where a variety of colors can enhance creativity and expression. Elevate your writing experience with these high-performance ink cartridges designed for versatility and reliability.