Felt-tip pens have different applications depending on the construction of the tip and the composition of the ink. A classic felt-tip pen such as the STABILO Pen 68 is primarily suitable for color-intensive coloring. But it can also be used with a brush for watercoloring, for example, as long as the ink has not yet dried on the paper. Other felt-tip pens, such as the STABILO Pen 68 metallic or the STABILO Trio DECO, contain metallic particles in their ink. This allows them to create metallic glitter effects on normal paper, as well as particularly intense effects on dark and black paper or even smooth surfaces such as foils, glass or Christmas baubles. Brush pens such as the STABILO Pen 68 brush have a flexible brush tip and are therefore ideally suited for handlettering.