Master Lock - Universal Size Fits 1-7/8", 2", and 2-5/16" Couplers - Trailer Locks #389DAT

Very durable and secure. Had it on my boat trailer outside and no rust. My boat stayed secure. Keys always went in without trouble. This is a good bit for your trailer for extra security.

Seems to be a relatively secure tongue lock. I would not say it’s overbuilt, however it seems like it would deter the common, opportunistic thief. A well equipped thief could defeat most any lock and there’s always that someone that thinks ahead and simply chain wraps a trailer tongue and drives away.For my purpose though, I think this will be more than satisfactory.It fits tightly to my 2” trailer tongue and the lock cylinder operates very smoothly.I recommend this tongue lock considering the MasterLock name and my personal observations.

Using this on my 16 ft Pace American enclosed cargo trailer. Fits nice. Key works fine. Good price

Durable and easy to use. Ideal for safeguarding trailers.

Another good product of high quality from Master Lock. Will recommend and purchase again if needed

Great lock! Makes me feel better knowing that I have this on my utility trailer. I'm sure if somebody really wanted to break this lock they could. But at least it will hopefully make somebody work to break it off. It seems heavy duty and durable, and it's very easy to install, and best of all, it doesn't break the bank. So far, I'm happy with my Purchase

These toung locks work great ,I have 3 trailers and I use these anytime my truck isn't hooked up to trailer

I bought the Master Lock Universal Trailer Coupler Lock, and it's been a great addition to my RV setup. It fits perfectly on my 2-inch coupler. It’s solid, durable, and provides that extra layer of security when I’m parked at campgrounds or when my trailer’s stored. The lock is easy to use—just slide it on, lock it in place, and I feel much more confident leaving the trailer behind. It’s made of heavy-duty materials, so I’m not worried about it rusting or breaking.Overall, this Master Lock is a great value for the price and provides peace of mind that my trailer is secure. I highly recommend it to anyone with a trailer or RV!