Writing Thickness:1-5mm Size about:14cm Ink Color:Gold/Sliver Features: The ink is shiny, long-lasting and does not fade, and can be written on smooth surfaces such as glass, ceramics, resin plastic, metal, paper, and so on. Add some sparkle to your everyday writing! These metallic marker pens have a writing thickness of 1-5mm and are approximately 14cm long. Choose from shimmering gold or silver ink that stays shiny and vibrant, even on smooth surfaces like glass, ceramics, resin plastic, and metal. Plus, the ink is long-lasting and won't fade, making these markers perfect for all your creative projects.