This stylish pen features smooth black ink with a 0.5mm fine tip and measures 5.71" in length, black, gold, and silver available. It has a fun, innovative design- can transform from a flat pen holder into a 3D diamond-shaped geometric structure. This pen is both practical and entertaining, perfect for daily writing, note-taking and office work. It also doubles as a stress-relief tool, offering a fun, tactile way to alleviate work or study pressure.