This Staedtler Pigment Liner is the perfect tool for writing, sketching and drawing thanks to its fine 0.3-2.0 mm nib. It has a long metal tip making it ideal for use with rulers and templates and has a polypropylene barrel for durability. The ink is waterproof for long lasting artworks but erasable when used on drafting paper. This liner has a 0.3-2.0 mm nib. It is a great option for drawing, drafting and writing.