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a ballpoint pen or sharpener that can change color or diameter by turning the handle
a ballpoint pen or sharpener that can change color or diameter by turning the handle
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机译:圆珠笔或磨刀器,可以通过转动手柄来改变颜色或直径
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摘要
The present invention can change the color (or the diameter of the sharp) of the ball-point pen in a different way from the basic ball-point pen, and more specifically, by turning the upper part of the handle of the ball-point pen to change the color (or the diameter of the sharp) of the ball-point pen. It is an invention designed in a different and different way from the existing ones by changing the diameter.
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