Sigma (1.8 - 1.16) -

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

Waterproof and lightfast; the ink is removable on nonporous surfaces (like glass) but permanent on porous surfaces (like paper). Sigma (1.8 - 1.16)

Vivid, opaque, water-based, and non-toxic pigment ink. Suitable for writing or drawing on virtually any

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. and wood. Waterproof and lightfast