Permapaque markers are safe, no-mess opaque paint markers that you do not need to shake. They are non-toxic, quick drying, odorless, permanent, and suitable for acid-free environments. Not permanent on non-porous surfaces. Use them on almost any surface, including ceramics, wood, metal, and glass. Available in Dual Point or Fine Point. Each Dual Point marker has a chisel point at one end for both detail and a wider coverage, and a bullet point at the other end.