Blaylock American Metal TL-20 Coupler Lock<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>For commercial and recreational use</li><li>Fits couplers 17/8-25/16"</li><li>Fits Hammer blow， Bulldog &amp; RAM</li><li>Patented design ensures the most secure way to leave an unattended trailer</li><li>Solid hardened steel lock rod for security</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51f692-cVBL.jpg" noproxy>