Pica Visor White 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 exceptional versatility and water resistance, ensuring clear and durable markings on almost any surface. The lead is highly reliable, drying out, which s full performance from the very first to the last line. For results, avoid using these 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: 991/52