Experience precision and control with the rOtring Rapidograph Technical Drawing Pen, a must-have for professionals and enthusiasts alike. Boasting a modified ink cartridge for uninterrupted flow, this pen is designed to deliver smooth, consistent lines for all your technical drawings. The luxurious gold trim adds a touch of elegance, making it as stylish as it is functional. With its robust build and classic design, the rOtring Rapidograph pen is perfect for those who demand quality and reliability in their drafting work. Whether you're at the office, in a classroom, or working on your latest project, this technical drawing pen will ensure your intricate designs come to life with ease. the ink cartridge has been modified so it can be refilled