Proven Industries Model 2178-B Trailer Lock, Fits 2-Inch Bulldog or Ram Trailer Couplers, Made in The USA, (Black)

It was very easy to put on the hitch.It encompasses the whole hitch and the lock fits snug so it would be hard to cut it off. The lock has a special key that I would say is hard to pic. It’s thick steel and is powder coated I guess so it does not rust. Very satisfied with the purchase even though it was pricey but worth it.

This lock is outstanding. Fits my Bulldog hitch coupler perfectly. Only minor gripe is the learning curve for inserting the key to unlock. Finding the keyhole in the blind was difficult at first forcing me to lie on the ground to look underneath to insert the key. However, being a good trained monkey I soon got the hang of it. I can see why it might deter some theives from just the inconvienience of having to get low enough to see. After a few uses, I can insert the key easily from above now that I know the alignment. This lock is heavy, well designed and easy to install and remove. I am very pleased with my purchase and have every confidence that no one is going to drive off with my trailer when the lock is installed. I highly recommend. Sure it's expensive, but when weighed againt protection of my trailer and contents, it is well worth the price I paid. I plan to buy again for my next trailer.

This product does exactly what it is supposed to do. Very happy with the quality as well.

This thing is a beast. I think it has to be the most secure way to lock, available. I’m sure everything is detestable, but I feel this is as good as it gets. I guess the idea is to convince them to find something easier than your trailer

It’s very heavy duty. Definitely would discourage a theft. The weak link might be the lock itself. Best trailer lock on the market.

The media could not be loaded.  Was excited to get this lock. Heard a lot about the company. Disappointed on the amount of movement the lock had and the fact I can’t put my chains inside the lock. Other than those two concerns the lock will do its job.

Material is strong, fit my Ram hitch perfectly! No ones getting that thing off.

Bought this lock for my new trailer. I have been keeping the trailer in the garage but sense receiving the product I can confidently leave it under a carport. It is well made and the designs looks like it would rehire people for loop trying to open it.

Great design and will protect your trailer. Worth the price for piece of mind.