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The traditional thumbtack always pierces the papers which are nailed on
the wall. So it makes a lot of holes on the papers, and that is inaesthetic. This new kind of thumbtack combines itself with magnet. It comprises two parts: the bottom half is iron and the middle of the upper half is magnet. The papers can be pressed between the two parts without broken. The design of oblique angle makes pressing and moving the thumbtack more easily