Master Coupler Latch Lock-Solid BrassTrailer Locks #605<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Protected case-hardened steel shackle resists cutting and sawing. Built-in anti-sawing pin for maxiumim protection.</li><li>Opening measures exactly 3/4". Works on all 1-7/8" and 2" couplers. Doesn't fit many 2-5/16" - check your latches width.</li><li>Solid brass case for corrosion resistance.</li><li>Simple installation and removal. Matching colored keyhead for added convenience.</li><li>Limited lifetime warranty.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41lfHgtQNFL.jpg" noproxy>