Markal 96131 Trades Marker (1 Holder, 12 Refills), Yellow Retractable grease pencil offers more convenience and longevity than a standard china marker Marks on plastic, glass, wood, metal, china, cardboard and paper Marks won't rub off and are weather-resistant Push button holder advances the stick eliminating the hassles found with wrapped china markers Needs no sharpening, eliminates the hassles found with the old paper-wrapped china markers