The four-color ballpoint pen designing meets different marking needs, whether it is marking in work or classification during learning, this ballpoint pen can easily meet needs. Suitable for students, teachers, and staff to use, making writing more organized. Lovely hydrochoerus design, adding writing pleasure, inspiring creative inspiration, and enhancing learning interest. Ergonomic design, comfortable grip, suitable for people who need to write for a long time, such as students and text workers. Mixed hair design, each set includes multiple colors for easy selection and replacement at any time.