Stabilo Write-4-All fine-tip, permanent marker pens are suitable for most surfaces
including glass, plastic, photos, ceramic, foil, metal and more. They
are reliable under extreme conditions such as cold, heat or rain. The
odorless, waterproof, alcohol-based, non-corrosive ink dries quickly
and is light- and frost-resistant. The pens feature a .7mm fine tip,
long cap-off time without dry-out and a ventilated cap. Stabilo has tested these pens on over 1000 surfaces!