Sigma (1.8 -: 1.16)

Based on your query, the reference describes the line width feature of the Uni Posca PC-5M Go to product viewer dialog for this item.

Produces a 1.8 mm to 2.5 mm broad line, which varies depending on writing pressure. Sigma (1.8 - 1.16)

Vivid, opaque, water-based, and non-toxic pigment ink. Based on your query, the reference describes the

Waterproof and lightfast; the ink is removable on nonporous surfaces (like glass) but permanent on porous surfaces (like paper). Based on your query

Suitable for writing or drawing on virtually any surface, including paper, photos, plastic, metal, glass, and wood.