The J. Herbin round glass dip pens are ornamental desk accessories that are functional for longer writing than most other dip pens. The grooves in the pens allow the nib to load with more ink, a fascinating process tow watch as it travels onto your page. Each pen is hand crafted producing a unique tool to enjoy. Fine sand paper (grade 400) is safe to us when the nib is blunt or needs a slight reshaping to bring it back to it’s best self.