Rotring Isograph Technical Pen Replacement Nib
- Replace your favorite isograph pen with replacement 0.25 mm nib
- The hard chrome-plated thin tip produces exquisite, detailed work
- The wear-resistant tip prevents dripping and blobbing
- Designed and crafted with precision for superior performance
- Ideal for use on a variety of surfaces including line board, tracing paper and vellum drawing paper