Acorn's Easy Press Pen, designed by Shelly and Bernie Tobisch, is intended for use with Easy Press Fabric Treatment #AP10012 (sold separately). The specially designed applicator pen allows you to place the starch-like solution precisely where you want it. Applying the Easy Press Fabric Treatment along seams followed by pressing with a hot iron will produce perfectly flat seams. Replacements tips/nibs are available in a 5pk #AP10031 (sold separately).