A smooth-writing, non-toxic grease pencil in a convenient holder. - Starter pack includes one holder and 12 refills - The Markal Trades-Marker is a grease pencil that, unlike "peel away" pencils, has a durable plastic holder that reduces breakage, keeps hands and clothing clean, has a one-touch advance that eliminates sharpening time and mess of the other paper-wrapped pencils, and maximizes the complete use of the marker. -Leaves bold, permanent marks on surfaces such as plastic, glass, metal, wood, cardboard, and paper -Marks won't rub off and are weather-resistant -Safe for all surfaces -Great for marking even rough, rusty, or dirty surfaces -Refillable and available in a variety of colored leads