General description Inside the chunky aluminium barrel of each Pentel N50 permanent marker is quality Pentel indelible ink that writes smoothly on almost any surface, from plastic and metal to ceramics and glass. The bullet tip writes a 1.5 to 2.0mm line width, making it ideal for general purpose use in industry or commerce. This pack contains 12 green markers. Technical specifications Marker type: Permanent Tip type: Bullet Line width: 1.5 to 2.0mm Pack size: 12 markers Color: Green