Among international office supply companies, Czech Republic's Koh-I-Noor, founded in 1790, is one of the oldest and best. Koh-i-Noor's Progresso Office Eraser is manufactured with all-natural materials and is best for erasing graphite in the broad range of 4B to 6H classes of hardness. The parallelogram shape makes it easy to hold and use.

Single eraser
.5 x 1.75"