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Classic black color scheme, available in dual textures! The wave pattern is dynamic and smooth, while the grid pattern is steady and exquisite. The two patterns give the pen a unique texture, simple and not monotonous, suitable for various scenarios such as business, learning, and daily life. The pen body is made of high-quality materials, with a delicate and warm touch, clear and three-dimensional patterns, anti slip and wear-resistant, and not easy to leave marks. The grip is comfortable and fits the fingertips, and long-term writing does not feel uncomfortable or fatigue. 0.5mm smooth pen tip, even and smooth ink output, no stuttering or scratching of paper when writing, fast ink drying without smudging, easy to sign, take notes, and keep office records. Good sealing, not easy to leak ink, more secure to carry around, compatible with most standard replacement pen refills, easy and worry free core replacement. The integrated design is simple and atmospheric, with black color that is versatile and suitable for any occasion. It looks professional for business and office use, practical and durable for students' learning, and stylish for daily use. The details are well controlled, the pen cap is smoothly inserted and removed, and the anti slip design at the tail is more secure. It has both appearance and practicality, and the cost-effectiveness is maximized. It can be closed without stepping on lightning