Are you getting enough of breaking pencil leads again and again during writing? The Zebra DelGuard pencil applies an innovative mechanism "DelGuard System" which can save you from this unhappy writing experience.
The "DelGuard System" can effectively prevent lead breakage during writing. Whether the pressure is perpendicular to the wringing surface or comes from the side, it will absorb the pressure to stop the lead from breaking. The technique guarantees that the lead will never break within four pushes of the button.