This 8-pack of BIC Intensity Metallic Fine Point Permanent Markers features assorted colors with low-odor, acid-free ink that works well on both light and dark porous surfaces like paper and cardboard. The durable fine tip is perfect for precise detail work, while the soft rubber grip ensures comfortable control. Plus, the unique snap cap with Vapor Seal technology helps keep markers from drying out, making them reliable for long-lasting use.