Molotows Blackliner is a precise and easy-to-use pen for sketching, outlines, school, and more. It uses a water-based archival ink and is resistant to water and chemicals. Available in a variety of sizes, its robust metal-encased tip guarantees fine and exact lines. It also features a slip-proof, matte surface and a new Cap Off function which protects it from drying out for 90180 minutes. A creative must-have. Specifications: water-based, pigmented archival ink, permanent, fade-resistant, quick-drying, odourless.