Sun-star Metacil Metal Pencil is a metal pencil that writes using a special alloy core containing graphite and metal. As the tip moves across the paper, microscopic particles are transferred through friction to form a pencil-like line, roughly equivalent to a 2H hardness. The extremely low wear of the core allows long periods of writing without sharpening. Its aluminum octagonal body provides a balanced feel in hand while preventing the pencil from rolling.

Marks can be erased with a standard eraser and remain stable when layered with water or water-based markers.