Permanent low odour pigment ink with no added toluene/xylene. Waterproof quick drying extremely lightfast and smudge-proof. Provides an opaque lacquer finish ideal for dark and transparent materials and smooth surfaces such as glass plastic and metal. All have a High-quality aluminium barrel with valve control ink flow. All colours are heat-resistant up to 400°C with the silver remaining visible at up to 1000°C.Contains 1 each of gold and silver in bold slim and calligraphy nibs.Long-lasting indoors and outdoors.Exceptional ink for heat-resistant marks up to 400 °C and some colours are still visible up to 1000 °C.Visible marking even in compromised lighting conditions.Foil seal ensures the product is unused when purchased.Intensive colours.High-quality brand product.