CURT Manufacturing 45311 Class 4 Ball Mount<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Fits trailer hitches with a 2" x 2" receiver tube opening</li><li>Equipped with a 1 1/4" hole to accept a trailer ball shank</li><li>4" drop or 2 3/4" rise for precise trailer leveling</li><li>Hollow shank weighs less and can be used with an anti-rattle hitch pin</li><li>CNC-formed， robotically welded and mechanically descaled for a perfect fit</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31U2QDf2JaL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31IC%2BdDkTjL.jpg" noproxy>