Thetford 01664 Plain Valve Cap<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Thetford Hose Adapter Cap</li><li>Fits in standard 4 inch trailer hose bumper for convenient storage while attached to 3 inch sewer hose</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41Y5tlxXC0L.jpg" noproxy>