My favourite black pens ever! These pens are amazing – they are definitely permanent and waterproof, which means you can paint over them with a watercolour (or inktense or brusho etc) wash and the lines will not bleed. They come in different sized nibs so you can choose between thick or thin lines, brush strokes. Mainly available in black, but also in 0.5mm size point in sepia and grey to add toning and shadows.
Other brands have stopped working quite quickly for me as the point went, but these go on for ever (assuming you draw like I do – no responsibility taken if you don’t!).
Lovely to handle for drawing, sketching and writing.
For all the different sizes, see the drop down menu