Natural Butterfly Bamboo Premium Pen $ 10.90 Shell material: bamboo Specification: 1.48 * 1.2 - 1.3cm Ink supply system: rotating ink absorption Nib material: Titanium Packing: cloth bag Pen color: butterfly bamboo inset horns with two-section knot pen, Merlot bamboo inset horns with two-section knot pen, purple bamboo inlaid ebony pen, purple bamboo inset horn pen, butterfly bamboo inset horn pen Pen tip: 0.5mm Production method: semi-manual and semi-mechanical Material type: Butterfly Bamboo