Zig Posterman Chalkboard Pens are waterproof, opaque and lightfast. They are suitable for indoor & outdoor use. Zig Chalkboard Pens can still be removed from non-porous surfaces with a damp cloth and glass/window cleaner or Zig Chalkboard Cleaner. Zig Posterman Chalkboard Pens can be use on chalkboards, whiteboards, glass, plastic, mirror, metal, slate and ceramics.
|Nib Size||1 mm|