These grease-pencil style markers from Sharpie are great for making smooth, opaque marks on porous and non-porous surfaces such as china, glass, tile, wood, metal, plastic and more!
Marks made with this pigmented wax are fade and water-resistant, but still can be easily erased with a damp cloth.
No sharpening is required, just peel the tear-string to remove the paper wrapping and reveal more marker!