Mechanical Refill Erasers for 600 and 500 Pencils, 5-Pieces (502720)

Exact replacements. Glad I found them. If you're one who uses the on-board eraser you're going to need them.

These eraser refills are the best of any eraser refills I've used, and not just for Rotring pencils. These work with Petel Sharp and Staedtler 925 pencils as well (and others), and are better than the native erasers they come with due the the construction of the metal clamp for the eraser. Other mechanical pencil erasers often slip into the body of the pencil due to the lack of backing on their clamps. These erasers mitigate that issue, which is why I only purchase these to refill my mechanical pencils when their erasers run low.

ok

シャーペンの替えゴムなんてあるんだーと感心しました。

Muy buenos borradores de repuesto para lápiz mecánico Rotring 600 y 500. Además del borrador, se incluye el capuchón metálico para sostener la goma en su lugar. Son caros en comparación con otros productos similares, y su valor agregado disminuye al no incluir un alambre de acero para despejar la guía de puntilla, pero cumplen con el propósito de reemplazar el borrador conforme se desgasta o extravía.