Trailer Coupler Lock - Butterfly Style

Great product. Fantastic turnaround ti me. 149325

Great lock, works awesome with my trail er. 45767

Looks like a good, little lock. 375510

It locks up the trailer. It seems that it would be hard to cut off. 334713

Exactly what I was looking for and at the best price around. Just wish you could pick what key number you get, so all of our trailers could be keyed the same. 282437

Works as promised. Thanks. 336700

Fast, secure, FREE shipping. Great product, I would highly recommend it as well as buying from etrailer.com, they provide great communication and great prices. 56880

Ordered 3 of these little locks - Exactly what I needed to secure my 3 trailers when stored or attached to my truck - Perfect fit - Easy to use and adds that extra little bit of security to discourage theft - 5 Stars 428271

I owned a Fulton butterfly lock that served me well for 25+ years which finally gave out. Right out of the package I was somewhat disappointed with your product as the keys are not brass as the photo depicts and the lock's color appears to be painted. Time will tell if it the performance meets my expectations. Thank you. 543532

This was a small disappointment in my order. When using the lock the first time, I noticed the pin was not fully seated in the lock. Basically the pin is supposed to be seated and permanently set in one side of the unit. As you turn the key the pin travels with that half of the lock. I had to pound the pin into the hole. Now the lock works as advertised. I think it will work fine on the trailer. I won't have to return the lock. That being said, if security is paramount to you, this is not high security. This is more of just a deterrent. 177479

The lock is exactly as described. It does not fully close on my 2 5/16 ball hitch latch but works. It was noted that it was for the smaller hitches and I took a chance. I will work great on my small trailer. 353624

This lock was purchased to lock the load bearing pin on a Bulldog BX-1 gooseneck tube (the tube portion, not the coupler itself, since my entire tube was stolen). There is not a locking pin manufactured to Bulldog's knowledge that suits these needs. Standard coupler locks are 1/4" shank usually, and the end of the load bearing pin has a .20" hole for the retainer pin. Bulldog sees no reason why it couldn't be drilled out to support a 1/4" coupler lock that will fit on the end of the 3/4" diameter load pin. I have not yet performed this action but will upload pics when complete. May even get a 5th star if all goes well. 455173

by: Samuel03/02/2019

Well I haven't been able to use them yet. I opened them up to try them and 1 wouldn't turn to open up. I still haven't used them yet. 1 worked fine and the other was turned to far and when it arrived it wouldn't turn at all. I sprayed it with WD-40, and nothing. 609785

by: Rod N12/05/2018

Year later still works great for locking gooseneck hitch and pins. One key showed up broken, oddly but no matter. I Love etrailer. Going to get more for the latches that slide over a pin hole like on the back of cargo trailers at the ramp. These ride upright so they don't slam up against the trailer. 588672

Looks to be of very good quality. I recommend it. 581386

As expected. 569682

Exactly as described. Good value. 549439

Received product. -- looks good 542342

Product works as described and is good quality 510969

by: Bela12/26/2017

Simple, effective, good for the price 462900

Purchased a Drop-Tail Trailer without a Trailer Jack. etrailer recommended the products, mailed them FREE & got everytrhing in TWO DAYS. Installed without any issues. Highly Recommend!! 454119

The hitch lock is a simple and effective way to secure your trailer to your tow vehicle. 398416

Exactly what I ordered came in time 364075

All items were received within three business days of placing the order and were easily tracked from the tracking site etrailer sent. They were packed well and received in great condition. Thank you for the great customer support and speed of delivery. I will use etrailer for my future needs. 360785

My item came in quickly, and it was a good price. 348002

by: mikes01/11/2017

good piece of mind for a cheap price! 331837

by: Mike F11/22/2016

Had this for a year now, still looks new. Great product. Would buy again. 318769

Exactly what I ordered. Fast delivery definitely use etrailer again 309129

All the products I ordered were top notch and the people I delt with on the phone were supper nice and very helpful 308791

You can always count on great service with e trailer 254889

Works good, excellent for the price. 216009

Product arrived quickly and installed onto camper with perfect fit. Hopefully will last many years exposed to elements. 200759

I am happy with the lock. Tks 194448

THANKS GOOD PRICE 193677

the product was exactly as advertised and in perfect condition and shipped incredibly fast and arrived in great packaging. 167064

Haven`t used it yet. Made in china and is poorly made. It takes a lot of work to get the keys to fit and make it open. 152591

Used similar product before. Easy to use and reliable 152083

Looks good, works well, as described 134286

Will work to secure coupler latch. 115109

The item was just as describes on the website. It arrived very quickly in 2 days . The whole transaction was smooth and handled very quickly 108826

Great lock and we used it this past weekend. Very easy to use and worked as advertised. eTrailer continues to provide great products at reasonable prices! 105360

Ive used these in the past and they work great. They are made a bit cheaper these days but what isnt. This will lock the coupler to the ball... but you will still have to lock the drawbar to the receiver with a locking pin, or remove the drawbar. Anyway... a great concept and easiest way to protect theft. 96435

Received products quicker than I thought possible. The follow up throughout the process was stupendous 95680

I use it on a trailer hitch ,looks stro ng, 94836

I receivced my trailer's lock in about 5 days and it was very easy to install. It look's good and stronge and looking forward to see how it proforms in the long run. 90772

Excellent product - this my second one, have used the 1st one for years without any problems! This one goes on my other boat trailer - staying with what works !!! 88147

Tight fit. Took a moment to figure out that the key actually screws apart the lock. Tight fit so would be tough to cut. If it stays clean should be good, but if it gets gritty, it may be difficult to unscrew. 72968

Unknown qualty until tested. 59964

OK LOCK NOT VERY HEAVY BUT WILL SERVE THE PURPOSE NEEDED 59959

Excellent Product ...Great Price... Super Fast Shipping Thanks 41311