Steadtler Pigment liners are suitable for writing, sketching and drawing with lightfast and waterproof ink, these liners will not bleed when highlighted over. They can be left uncapped for up to 18 hours without drying up and are aeroplane safe (they will not leak under pressure). Steadtler Fineliners have a metal tip and permanent, indelible ink, they are available in 9 line widths in black ink.Code: 30802-9