Trimax™ UMAX 100 Universal Unattended Trailer Lock


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  • High quality hardened steel construction
  • Ballistic-grade polymer housing cover
  • 16mm hardened steel shackle
  • Dual ratchet locking system
  • Key cover
  • Includes 2 keys
360° of solid steel protection against trailer theft! The Trimax UMAX 100 Universal Trailer Lock is constructed of high-quality, solid hardened steel and fits all coupler sizes (1-7/8" to 2-5/16"). A 5/8" (16mm) hardened steel shackle ensures your trailer is as secure as possible, even when left unattended.
Rated 4 out of 5 by 7 reviewers.
Rated 4 out of 5 by Atwood Surge Brake Hitch - No This is a very nice lock and I would recommend it for anyone EXCEPT if you have an Atwood Style Surge Break Hitch. After you put the lock on, all a thief has to do is raise the release lever and the ball latch releases and the lock just falls off. July 5, 2008
Rated 5 out of 5 by No Brainer!!! Easy to use... slide cover to protect the key slot from weather, and it's HEAVY DUTY. A must have if you are going to park your boat or other trailer outside. June 10, 2008
Rated 5 out of 5 by GREAT SECURITY I have used one of these on several trailers for several years now. They are easy to use, and the added security is a warm welcome. March 16, 2008

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