Pentel N50 Permanent Bullet Marker Broad Blue (Pack of 12) N50-CInside 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 which is ideal for general purpose use in industry or commerce. This pack contains 12 blue markers. Durable permanent marker Writes on almost any surface rough or smooth Heavy duty with tough aluminium barrel