Create gothic letters, ornamental borders, decorations, and more with Speedball Broad Edge A-Series Square Calligraphy Nibs. Made of the finest steel, these broad edge nibs have a multi-purpose design that produces lines of uniform width with a square finish. Theyre ideal for producing Gothic or Monoline lettering styles. Available in a variety of widths, the nibs fit any straight or standard pen holder. - Speedball Broad Edge A-Series Square Calligraphy Nib - A1.