And by coating them with color

The shape of the tip: round

The icons are easy to understand

if you coat the discs with a thin layer of varnish or laquer

But to achieve maximum strength

Edding 751 Paint Marker, Grøn (1-2 mm.) knivskinne And by coating them withA green permanent marker, model Edding 751. Marker with a fine point tip (1 2 mm). IMPORTANT! You cannot erase permanent markers and we do not recommend using this marker on whiteboards. If you are in need of markers that will work on a whiteboard, we recommend using specifically designed board markers. Tip width: Approx. 1 2 mm. Tip shape: Round Color: Green The Paint Marker can be used on almost all materials: Metal Glas Plastic Wood Cover: