Experience unmatched precision with the Uni-ball Signo RT1 retractable gel pen. With an extra fine 0.5mm tip and fresh, improved gel ink, it's the ultimate tool for designers, writers and office professionals. Its sleek design paired with a rubberised grip ensures comfortable writing. The pen's Uni Super Ink is permanent once dry, making it perfect for all your important documents. This is not just a pen, it's a game changer in blue ink writing solutions.