Thickness and colour

Pencil lead:

Thickness of lead, HB, 0.7mm

Colour: graphitegrey


Gel pen:

Thickness of lead, 0.5mm.

Colour: black


Ballpoint Refills: 

Flow Medium, ceramic ball with a diameter of 1.0 mm and a line width of 0.6 mm.

Flow Bold, ceramic ball with a diameter of 1.2 mm and a line width of 0.8 mm.

The line width varies depending on the pressure applied to the writing instrument.

Colours: black and royal blue