If you want to erase pencil marks, get a MAGIC RUB® eraser — nothing else compares. The soft composition doesn’t damage paper fibers, and its adsorbent porosity just vacuums graphite off the surface with a light rub. MAGIC RUB® does a good job of removing pencil marks from other surfaces as well. This non-hardening eraser wears with use, leaving a constantly clean, fresh surface. If you’ve only experienced the standard kind of abrasive red eraser, either block or pencil tip, which leaves a rough reddish smear, you will be surprised by the the results. There are other white erasers — vinyl, plastic, polymer — which are not the same. MAGIC RUB® is better than gum, kneaded, white or pink pearl®, and the long cylindrical white erasers used in stick type or powered drafting erasers. The only close equivalent I’ve ever come across is the eraser on the end of Pentel® mechanical pencils, which may be identical for all I know.
Try it, you’ll like it.