<ul style="margin-left:18px; margin-right:0px"> <li>MADE OF PVC - Reliable, durable and they have great grip, don&#39;t loosen with time. If you&#39;re losing pin backs, these are a good option for replacements.</li> <li>SIMPLE TO USE - Just put the pin into the backing hole, your items will keep pinned securely without problems.</li> <li>PIN SECURE BACKS - Pin backs lock pins firmly and secure pins in place, no worry about losing your meaningful pins.</li> <li>PIN BACKS SIZE - Back for pins are 11mm in diameter and 7mm in height, great pin clutch backs replacement, compatible with pins 1-1.2mm in thickness, it cannot fasten if the pin is too slim.</li> <li>WIDE APPLICATION - Idea use as lapel pin backs, brooch pin backs, tie pin backs hat pin backs, fits on tie tacks, badge insignia, name tag, toy pins, citation bars, jewelries and other homemade craft pins.</li> </ul>