Koh-i-Noor Eraser Refills for Koh-i-Noor #EB-1200 Battery-Operated Eraser (Sold Separately), Pack of 30 Erasers (EB-1200ER) Eraser refills for Koh-I-Noor Battery-Operated Eraser #EB-1200 (sold separately) Erases completely from paper, drafting vellums and film Contains 30 graphite erasers Easy to use Authentic quality product