Review by Stephen D. Guttery for Master Lock 605DAT Solid Brass Trailer Hitch Coupler Lock
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This lock fits and works. It is secure and defies casual theft. It is weather resistant and stays shiny after years service. Not shiny enough to find it in the weeds, but shiny none the less. I am buying my second one because the only way this lock can fail you is if you lose it. I did.

Review by John A. Lefcourte for Master Lock 605DAT Solid Brass Trailer Hitch Coupler Lock
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This lock jammed and couldn’t be unlocked. I was happy that it was brass because I wound up sawing it off.

Review by R. Chang for Master Lock 605DAT Solid Brass Trailer Hitch Coupler Lock
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This lock works great. In fact, it works extremely awesome.

I used it on my trailer to lock the rear doors. I had thieves break in. However, the thieves were not able to break this lock so they instead used a crowbar to pop the rivets for the entire door lock assembly in order to gain access to the trailer.

So, I actually kinda wish they had broken the lock since it would have meant less damage to my trailer.

However, that is not the fault of the lock and just goes to show that this is a very good lock. You won’t be disappointed in it making thieves angry.

Review by Digby In FL for Master Lock 605DAT Solid Brass Trailer Hitch Coupler Lock
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I could not find this lock at Home-Depot nor Lowe’s. I had one for 5-6 years to go on my pop-up camper hitch. The old one finally rusted (I live in FL so things rust in the salt air). Perfect fit for most ball hitch latches. I use it while driving and storage.

Review by B. Moody for Master Lock 605DAT Solid Brass Trailer Hitch Coupler Lock
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this product works great on utility or boat trailers the only real problem is if you forget to get it off the truck bumper then you lose it..as yes i did..going to get a new one now.. its made of solid brass good and strong no complaints about the product