rubber pin backs, 100pcs lapel pin backs, pin safety backs for brooch tie hat badge insignia, black kasbee pin backs for lapel, dammits, brooch, tie, hat, badge insignia, name plat, jewelries<br> <b>features:</b><br> rubber pin backs made of high quality pvc rubber<br> pin backings lock your pins firmly and securely <br> pins locking backs compatible with pins 1-1.2mm in thickness<br> pin clutch backs great for most lapel pins, tie tacks, badge insignia, citation bars, jewelry,etc.<br><br> <b>specification:</b><br> diameter: 11mm<br> height: 7mm<br><br> <b>warm tips:</b><br> 1)the size above is measured by hand, the size of the actual item you received could be slightly different.<br> 2)pin backs locking are small and tiny accessories, please keep them away from children under 3 years old and your pets as well.<br><br> <b>package includes:</b><br> 100pcs rubber pin backs