These gel pens feature a fine 0.5mm tip designed to deliver smooth, fluid writing with scientifically proportioned ink. The quick-drying black ink helps prevent smudges and stains, making them ideal for note-taking, school assignments, and office tasks. The set includes six pens with gradient colors, adding a colorful and practical touch to your writing tools. Each pen is equipped with a golden rolling ball on the pocket clip, which not only secures the pen to notebooks or binders but also provides a small entertaining feature. Made from synthetic materials and supplied new, these gel pens serve as excellent writing instruments and thoughtful gifts for students, colleagues, or family members who appreciate quality office supplies.