rOtring Isograph Technical Drawing Pen 0.35 mm Refillable Fineliner

High precision 0.35 mm pen with refillable ink reservoir for drawing The hard chrome-plated thin tip produces exquisite, detailed work The wear-resistant tip prevents dripping and blobbing Designed so that ink level is clearly visible, so you know when it's time to replace the ink Ideal for use on a variety of surfaces including line board, tracing paper and vellum drawing paper