Details About this Product In the 1980s, Sakura surprised the pen industry with the invention of the first gel-based ink creating the first and original gel pen. Sakura has perfected the smooth ink flow technology of Gelly Roll Classic White to offer our most popular color in three nib sizes: 05 Fine, 08 Medium, and 10 Bold. The opaque white ink stands out on dark and colored papers and makes highlights pop in illustrations and comics. Use it for handlettering accents, party crafts, layered on top of colors for mixed media and bright highlights in tonal drawings. Use the range of thick and thin lines to create small details and unique bold marks