Midwest Products 3021 5-Pack Railroad Cork N Roadbed<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Resembles the ballast used on real railroads</li><li>Consistent thickness， lightweight and offers excellent sound absorption</li><li>5 pair per box</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31IaSTNxO9L.jpg" noproxy>