Ironlak Permanent Marker 1mm black
The Ironlak Permanent Marker 1mm Black is an optimal pen for the finer details for your sketches. The ink formula ensures that it dries very quickly and is waterproof. This ensures that your end result is never dirty. The nib is of good quality and therefore does not break easily on hard surfaces, for example. You can also safely take them with you on the plane (the pens do not explode due to the pressure).