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Bemused (Tunjukkan profil) 7 Oktober 2012 03.20.17
sudanglo:Well I for one would be most reluctant to pierce the leather of my innumerable leather jackets. And it could be uncomfortable sticking a pin into a T shirt. I wear these a lot in the summer.For leather jacket and T shirt friendly pins, Google "magnetic backed pins".
This site explains how they work, sorry I do not know how to embed the link, just copy and paste.
http://tech.3steps.com/reviews/magnetic-backing