Reese Towpower 7031500 Easy Access Adjustable Coupler Lock<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>360 degree rotating head for easy lock access</li><li>Integrated key slot cover helps protect lock from dirt</li><li>6 locking positions</li><li>Adjusts from 5/8 inch to 3 inches</li><li>3/16 inch diameter pin fits most couplers</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31KqoU%2BTigL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/418DxQKzEzL.jpg" noproxy>