These GoldStar China Markers, also know as "Grease Pencils," leave opaque markings without skipping on all types of shiny surfaces including glazed pottery, glass, plastic, metal, rubber as well as porous surfaces such as fabric, wood, and paper. Marks are water-resistant and colorfast. Can be easily removed from non-porous finishes.
Works great as a highlighter, too!
Using the pull string easily exposes the paper wrapped core.