Barrels of these black ink pens is made with bamboo, which is reliable and durable, and the tips and clips of pens are made with metal, harmless and comfortable to use. These ballpoint pens are suitable for home, school, office, diary writing, office supplies and other scenarios. You can also give it as a gift to family members, colleagues, or as a small gift for activities, which is convenient for business trips, meetings, and note-taking, bringing you a wonderful experience.