An eraser in pen style. High-quality Mars plastic eraser core in a plastic holder, fully-retractable on a simple ratchet mechanism. Easy, convenient and precise erasing. Replacement eraser cores available. This useful plastic holder with an eraser in is perfect for detailed erasing, just lengthen or shorten with the sliding mechanism to get whatever length you need. Comes with one eraser. Product Details: Eraser holder for graphite on paper and matt drafting film With core sliding mechanism and clip Phthalate and latex free Single eraser core refills available Click Here for the Staedtler Mars Plastic Eraser Refills