POWERTEC 70147 Tapered Adapter， 4-Inch to 2-1/4-Inch<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Tapered ends for press-on fit</li><li>Increases air velocity</li><li>Tough， durable ABS plastic material</li><li>Durable construction stands up to hose-clamp pressure</li><li>Outlet diameters: 4" and 2-1/4"</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41lC19i7n%2BL.jpg" noproxy>