KREUL Glass & Porcelain Pen Metallic Medium is a set of 5 metallic markers for glass and porcelain, ideal for adding shimmering red, blue, copper, silver and gold details to mugs, plates, glasses, jars, ceramics and metal objects. With opaque colour, a medium tip and bright metallic shine, you can create lettering, dots, lines, outlines, small motifs and festive or elegant details on personalised gifts and home decor projects.