If the surface is a bit flexible
The Inkjoy ink is as smooth to write and draw with as other gel inks but it dries in a second
as standard they come with a brush tip and a broad tip
Calligraffiti flowpen from On The Run with a 20 mm chiseled tipped fibertip
molotow blackliner refill 30 ml Beats If the surface is aMolotow Blackliner Refill is 30 ml of waterproof archival ink made specifically for the Blackliner fineliner pens. It's water based, fade resistant, and wipe proof, so once it's down, it stays there even if you layer water based or alcohol based inks on top. The ink is also resistant to chemicals, making it solid for sketches, outlines, precise illustrations, graffiti sketches, comics, tattoos, or any detailed work that needs to last.