rotring 0.10mm Isograph Technical Pen Refill  (Ink Color - Black)

The Rotring Isograph Technical Drawing Pen is a high precision technical pen designed to provide you with flawless lines. With its ergonomic barrel, the Isograph pen achieves an ideal weight balance, allowing you to work for long hours without discomfort or fatigue. The wear-resistant, hard chrome-plated thin tip is perfect for exquisite detail work in drawing, drafting and technical writing. No matter what you’re working on, the superior design and high quality construction of the Isograph pen enables you to be technically perfect, every time.