1.0mm Metallic Doorknob Wet Wipe Marker.
Great for finer detailed designs. Chalk Ink® Wet Wipe Markers write like a paint pen but dry to look just like chalk, without the dusty mess traditional chalk leaves behind. Quick drying and smear-proof once dry; you can easily layer with other colors to create whatever designs you can imagine. Safe for use on a variety of non-porous surfaces, including chalkboards, chalkboard paint, glass, mirrors, windows, metal, and plastic. To clean, simply wipe away with a cloth and a little bit of water.
*Warning: Metallic chalk markers have a stronger pigment and can sometimes take longer to remove. It is always a good idea to test the area first.