Ringside Heavy Bag Spring<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Lessens shock so bag mounts last longer</li><li>Extra strong all steel construction</li><li>Size: 7 inches long</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41PbdOD9nZL.jpg" noproxy>