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Pencil sharpener blade is generally a flat steel bars, and the cone-shaped point of the pencil is easily blunted. "The Curved" is a pencil sharpener which has a curved blade.It will let the pencil has a curving pen point specially designed, the graphite core will be more slender. The pencil owner would reduce the number of sharpening a pencil.
Xing Wang Suwen Shen