Permanent Metallic Markers. Three permanent metallic markers in gold, silver, and copper with a line thickness of 1.0 mm. They are suitable for use on vinyl, paper, smart label materials, and more. These markers are compatible with Cricut Joy machines. They are water-based, acid-free, and non-toxic, and they become permanent once dry. Enhance your projects with personal messages or drawings and unleash your creativity. Cricut is a successful manufacturer of cutting machines and accessories that offer you nearly limitless possibilities to express your creativity. The company aims to help people make their personal DIY projects fun and easy, enabling them to lead a more creative life. Over time, Cricut has consistently introduced new machines, tools, and materials and will continue to do so to expand possibilities further. The company's inspiration comes from its customers, who continually surprise with their unique creations.