Artline freezer bag marker is great for making food items to be kept in the freezer Special soft tip that allows you to write on foil and plastic smoothly Use at room temperature, frost resistant to -25°C Xylene free RoHS Compliant (Restrictions of Hazardous Substances) 1.0mm line width Polyester fibre tip Instant drying Waterproof Bullet style Sold as a single pen .
eBay