Molotow's Blackliner has a pigmented archival ink, that is not only resistant to water and chemicals, but is also fade resistant. The ink is also opaque, permanent, and quick-drying. The Robust metal-encased tips guarantee fine and exact lines - perfectly suited for outlines. The ""Cap-off"" function protects the marker from drying out in 90-180 minutes, and the barrel has a slip-proof, matt surface for a sure grip. Set no. 1 includes .05, .1, .2, and .4 mm nib sizes.