Color ballpoint pen the rotary switch, and written with metal hook, perfect for hanging in the Pocket. Color ballpoint pen refills are professional ballpoint pens, writing freely, controlled ink evenly, for learning, Office and gift giving. Color ballpoint pen using high quality materials made of, a variety of colors, predominantly green, red and gold. Color ballpoint pen is Yiwu, Zhejiang, the wholesale price of 4.5 Yuan / , case of 500 / piece, minimum order quantity is 1 piece.