1) Normally, the main function of ball-point pen is for writing, and few people spend more energy on the design of          appearance.
    2) However, we adopt a new technology to combine glass and plastic instead of total plastic.
    3) From the picture, obviously, you can know the upper part is made of glass and under part is made of plastic.
    4) When you rotate the under part, pen point will come out.
    5) You can choose any style you like, or send your new design for our reference.