Are you enough of breaking pencil lead 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 prevents lead breakage during writing. No matter the pressure is perpendicular to the surface of wring or comes from the side, it will absorb the pressure to prevent the lead from breaking. The technique guarantees that the lead will never break within 4 pushes of the button.