Pica Visor Red Refills, 4PK come in a convenient carrying case, making them easy to transport and store. These refills are designed specifically for the Pica Visor marker and are suitable for marking on all material surfaces, ranging from glossy to very rough textures. They water-resistant marking that is extremely insensitive and versatile, ensuring clear and durable lines on almost any surface. The lead dries out, ing full performance from the first mark to the very last. For results, avoid using the refills on surfaces with temperatures exceeding 104°F (40°C). Each refill has a lead diameter of 10 mm and a length of 85 mm. Model Number: 991/40