With the KREUL Glass & Porcelain Pens Classic fine creatives write, draw and paint on cups, glasses, plates, vases, cereal bowls & Co. The brilliant, glossy glass & porcelain paints in pen with a fine tip are water-based and are ideal for decorative designs on glass, porcelain, ceramics, metal, acryl and mirrors. The painted object made of heat-resistant material is placed in the cold oven for fixing. When the temperature of 160 °C has been reached, bake the painting for 90 minutes. A colourful unique specimen is ready!