Looking for the highest quality liquid chalk marker? Look no further. These professional liquid chalk markers can be used on an extremely wide range of materials. Including wood, mirror, glass, metal and stone. They can be used for making eye catching outdoor displays, keeping the office calendar looking prominent and for creating dazzling art projects. Don’t hesitate Click add to Cart and buy these today! IMPORTANT – PLEASE READ SuperChalks are designed to be used on non-porous surfaces. We recommend that you check whether or not your material is porous before using SuperChalks to avoid any unnecessary staining. If you are unsure then we suggest making a tiny mark, leaving it for 2 minutes and then gently rubbing with a damp cloth.