Master Lock 379KAATPY Universal Coupler Lock<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Designed to provide safety and security for the coupler</li><li>Fits 1-7/8 inch (48mm) and 2 inch (51mm) couplers</li><li>Chrome plated</li><li>Easy to install</li><li>Corrosion resistant</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41XURxzQzuL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31UfNFNHyHL.jpg" noproxy>