Edding 141 F/4s Permanent Pen Set Of 4 Colors, 0.6 mm: When space is limited or for fine letters or marks a fine nib is requiredPermanent pen for fine permanent writing on virtually all non-porous plastic surfacesWriting can be corrected using alcoholThe round nib has a stroke width of 0.6 mmThe permanent pen ink is waterproof and quick-dryingSet Colors