Selizo pin holder set are great choice to use with brooches, name tags, hat pins, pin badges, lapel pins, enamel pins, homemade craft pins, toy pins, citation bars, service bar, etc. They also can be used for holding tie tacks and display books. <br> <br><b>Metal Pin Backs:</b><br> <br> Quantity: 24 pieces <br> <br> Material: copper <br> <br>Color: silver and white <br> <br> Size: 10 x 6 mm <br> <br> Usage: pull up the enamel pin back to secure onto and remove <br> <br><b>Butterfly Clutch Pin Backs:</b><br> <br> Quantity: 30 pieces <br> <br> Material: copper <br> <br>Color: silver and white <br> <br> Size: 11 x 6 mm <br> <br> Usage: push the trigger to secure onto and release <br> <br><b>Rubber Pin Backs:</b><br> <br> Quantity: 30 pieces <br> <br> Material: PVC rubber <br> <br>Color: black <br> <br> Size: 11 x 8 mm <br> <br> Usage: force the enamel pins to secure onto and pull to remove <br> <br> <br><b>Package Include:</b><br> <br> · 1 box of totally 84 pieces pin backs in 3 styles and colors>