The four Pen call I creative set offers the full spectrum of line widths perfect for practicing all styles of calligraphy script. The ease and fluidity of Manuscript's call I creative Italic marker pens means that the pens are highly versatile and can be used for all sorts of decorative purposes such as wedding invitations place cards certificates and more. Four Pen set includes 1.4, 2.5, 3.6, and 4.8 mm size nibs.