Eyeglass Frame Grips--Hinge Tighteners (pack of 10)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> 10 rings in each package </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Rubber hinged rings that provide flexible tension for a secure and comfortable fit. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Simply slip a frame grip up each bow over the hinges. The resulting flexible tension will give a tight， comfortable fit. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Pins and screws in these hinges cannot become loose or fall out. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/21gEALWBqVL.jpg" noproxy>