Fast drying, opaque, fade proof permanent markers with fast drying pigment ink that won't fade | These markers are ideal for all types of permanent marking where indelible marking is required | Suitable for any surface indoors or out | Fade proof metallic ink | Ink is heavily pigmented so it can be seen on dark surfaces | Permanent on most surfaces | Can withstand up to 100 DegC | Bullet nib with a 2.3mm line width | Valve action for controlled ink flow | Fast drying