This pen made of PP plastic,Click-off cap. Fade-Resistant Bullet Journal rollerball pens formula flows freely like a fountain pen. Cross rollerball pens can easily be converted into a Ballpoint pen or creamy porous felt-tip pen by simply changing the refill to desired type of tip; refills sold separately. Writes Smoothly: Get precise, clean lines of rich, full ink on every page with these liquid rollerball pens. These fine point pens flow free and write more smoothly than traditional pens. You won't regret customizing these product to fit your brand's style! "