Bullet-tipped nib with steel ball tip, metal nib, anti-collision and not easily damaged, wear-resistant steel ball is smoother. Anti-slip soft rubber design, increase the grip friction, feel comfortable in hand. Removable design, easy to disassemble, refill replaceable, convenient for long term use. The 0.5mm writing line width makes writing smooth and more wear-resistant. The ink is light and water resistant, not easy to fade and the writing is clear. Made from high quality PV plastic with UV over varnish printing technology, it is durable and long lasting. The pen clip is designed to be clipped onto a book for easy portability.