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Changeable pencil stub / Changeable pencil stub

Changeable pencil stub
Changeable pencil stub

This pencil is replaceable pen head free. You can replace the pencil stub is free and can be freely combined according to personal preferences and needs. By using the method of combination of the pencil stub spiral, like screws. The pen is not in contact with anything, to avoid the wear and tear on the pencil stub. And this kind of mosaic mode stable fixation.

University

Guangdong Ocean University

Guangdong Ocean University
Zhanjiang, China

Mingyue Chen,
Guangdong Ocean University

Zichao Liang,
Guangdong Ocean University

Baorong Wang,
Guangdong Ocean University

Changzhi Su,
Guangdong Ocean University