KUKI Multi-color Ball Pens integrate 3-4 ink colors in a single barrel, designed for efficient note-taking and color-coding in planning and office tasks. The pen features an ergonomic grip and a compact, rotation-free mechanism for smooth writing and easy color switching. With a stainless steel tip and viscous ink system, it ensures smudge-resistant and consistent lines of 0.7mm. Ideal for daily organization and quick annotations.