SPACE ADVENTURE solar system eraser set of 8 Erase your way through the solar system and learn along the way - it's easy with these 8 planet erasers! The special extra: On the back of the card, you will find all planets shown true to scale, including the distance to the sun. The perfect gift idea for little astronauts to play with and erase, or as a learning aid for school! Eraser size from approx. 1.2 cm to Ø 2.3 cm