Smooth writing: These metal markers feature smooth writing and quick-drying ink, which will not smudge or bleed through the paper; the brush tip is suitable for thick coating, and can be replaced with lines of different thicknesses to meet diverse applications. Package includes: 4 metal markers that can be used on paper, fabric, material writing, painting, etc. Material Safe: Our gold metal pen uses high-quality water-based ink, which is waterproof, fade-resistant, quick-drying and washable, and importantly, it is non-toxic, odorless, environmentally friendly and suitable for most surfaces. Wider application range: Gold and silver pens can be widely used on any surface such as black paper, plastic, stone, glass bottles, ceramics, metal, wood, canvas, craft decorations, black card crafts, etc., and can meet your needs in any scene. Kind Tips: Customer satisfaction is our top goal! If you don't like the product or find that there are quality problems with the product, please feel free to contact us, We will do our best to solve the problem for you in a timely manner!