Metasil uses a special alloy core that contains graphite, and because the core wears very little, it can be used continuously for a distance of about 16 km without sharpening the pencil, and it can also be erased with an eraser.

Graphite and alloy particles produced by the friction between the paper and the core during writing stick to the paper and become a handwriting. The density varies depending on the paper, but it is said to be equivalent to a 2H pencil.

The octagonal shape makes it difficult to roll and break, so you can keep writing for a long time, so you can concentrate on writing.

You can continue writing without having to erase(write 1200 sheets on A 4 paper)

The wear on the lead is remarkably small, and you can continue writing for a long time without sharpening it. Since you can concentrate on writing, it is also ideal for speed writing.