This technical pen set is ideal for fine artists, illustrators, draftspeople and creatives who value reliable, precise lines. The set includes seven pens with assorted line widths as well as a 3/4 oz. bottle of black Universal drawing ink and a nib key for taking apart your pens for cleaning and maintenance. Details:Includes assorted nib sizesConvenient flat shaped, hinged lid plastic case with secure push button releaseComprehensive kitContents:7 pens (sizes 3x0, 2x0, 0, 1, 2, 3, 4)1 bottle black India ink (0.75 fl. oz.)Nib key