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Zebra DelGuard Mechanical Pencil has a double spring mechanism that protects the lead from breaking. It is virtually impossible to break the lead, regardless of writing style and angle, due to this ingenious system. If too much pressure is applied, a spring in the barrel allows the lead to slide back into the the pencil rather than break the l...
The Uni Kuru Toga Mechanical Pencil has a very unique lead rotation mechanism. Every time you lift the pencil off the paper, the tip rotates a degree or so to keep the lead consistent and wearing evenly. That consistency keeps your penmanship neat.
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