Staedtler Mars Matic 700 Rapidograph with 0.40 mm nib. Staedtler pen with a high-quality metal tip and a writing thickness of 0.4 mm, ideal for maximum precision in linear and architectural design. The individual paper packaging includes the body with the metal tip and one ink cartridge without ink. The different coloring by size helps in the quick selection for the design thickness. The ink does not dry out thanks to the double sealing system on the cap, and the ink flow remains stable thanks to the collection system. Easy ink refilling from a bottle or with a cartridge.