Staedtler Mars Plastic Combi Eraser
Staedtler
$2.66
Use the blue side for erasing ink on transparent paper (vellum) and matte drafting film, use the white side for graphite. The high-quality, phthalate- and latex-free materials in this eraser make for a long-lasting and efficient product that won't discolor your work or crumble. Size is 2 1/2" x 7/8" x 7/16".