Discover the Styb K1 Mega Roller, a pinnacle of precision and performance in rollerball pens. Leveraging the latest liquid ink technology, the Styb K1 Mega Roller delivers an unparalleled writing experience. Its 0.7mm (or optional 0.5mm) stainless steel tip, equipped with a tungsten carbide ball, ensures a smooth, consistent line every time. The elegant aluminium finishing on the barrel adds a touch of sophistication, while the double ink level viewer allows you to easily monitor ink usage. Perfect for those who demand excellence in their writing instruments.