Staedtler box of 4 Lumocolor Non-permanent Fine (0.6mm line width) pens: Red, Blue, Green and Black.
Universal non-permanent pen for use on almost all surfaces.
Suitable for overhead projection.
Non-permanent: can be wiped off film using a damp cloth.
Water-soluble ink.
Fast drying.

For all-purpose marking on plastic, glass, metal, wood, paper and many other materials, Lumocolor markers offer the perfect solution.