Oxygen Key / Oxygen Wrench Plastic<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> Standard Plastic Oxygen Wrench </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Opens most portable Oxygen cylinders (C D E) </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31AqCMFN-rL.jpg" noproxy>