Inkzall viltpliiats must 1-4.8mm

Stays sharp longer, does not spread or sink when pressed. The durable acrylic tip is ideal for rough surfaces such as OSB and concrete. The felt-tip pens do not dry out even if the cap is off for a few days. Suitable for writing on concrete, wood, metal, plywood, OSB boards, and plastic. Can be used for writing on dusty, wet, rusty, and oily surfaces. The ink dries quickly and doesn't smudge when used on PVC or metal surfaces. Narrow design - convenient to use. Clip for attaching the pen to, for example, a helmet.