The Zebra Clip-on 4-color ballpoint pen is a multi-functional writing instrument that combines black, blue, red, and green inks into a single body to enhance writing efficiency. It features a binder clip that can be easily attached to thick files or notebooks, providing excellent portability, and its stable grip reduces fatigue during long writing sessions. With reliable quality manufactured in Japan, it is used as a practical item to convey brand value through mass production for corporate promotional materials or academy giveaways.