Precision marker sets are built around a line weight logic: each marker in a set corresponds to a calibrated tip, expressed in millimetres (0.2, 0.3, 0.5, 0.8, etc.), which determines the fineness of the stroke and its intended use. Very fine tips handle tight hatching, textures, and detail work in confined areas. Medium tips suit primary outlines and construction lines. Wide tips are used for ink fills, silhouettes, and dark zones in black-and-white illustration. Buying a set rather than individual markers covers a complete range of line weights in a single purchase, which is particularly relevant for manga, comic illustration, and technical drawing where visual hierarchy depends directly on stroke variation. Black sets are the most versatile starting point. Grey tone sets make it possible to build intermediate values without colour, useful for volumetric rendering in monochromatic illustration. Colour sets are better suited to lettering, creative layout, and bullet journaling. Also explore our selection of precision markers and pens and our full markers and pens collection.