This Staedtler Lumocolor Omnichrom Pencil is a wood-cased, water-soluble pencil and non-permanent.
This pencil can be wiped off many smooth surfaces such as plastic, metal, lacquer, leather etc. This China Graph pencil washes out of most textiles and can be used on almost all surfaces, e.g. glass, leather, textiles, stone, metal, wood, china, other non porous polished surfaces and plastic.
This is ideal for opaque marking even on dark and transparent surfaces, no bleeding through paper, colour-intensive and lightfast, non-corrosive colour pigments, no drying up and odourless.