Molotow Blackliner Pen 4-Pen Set II, .3, .5, .7, 1mm Tips, produces fine and exact lines; ideal for outlines, stencils and precise sketches. Water-based, pigmented archival ink is resistant to water and chemicals. Quick drying, fade-resistant ink is designed for indoor use. “Cap Off” without drying out 90-180 minutes; stroke width 1mm = 30 minutes; writing length is up to 2000 meters. Blackliner Set features slip-proof matte textured barrels & metal encased tips: .3mm, .5mm, .7mm, 1mm. Made in Germany.