AMPLock U-LPCVR 5th Wheel Lock | Heavy Duty King Pin Lock for Travel Trailer | Conical Lock Made of Ductile Cast Iron | Prevent Traction with Chains, Rust Resistant | Made in Canada

First of all, nothing is bulletproof as far as security. With that being said, this lock seems like it will deter dishonest people. The metal is thick, and well coated for preservation. The lock cover is a very nice added feature. It fits on a Roto-Flex pin, no problem. I might also add that it fits on that Roto-Flex pin with a lube plate installed as well, with a good amount of wiggle room. So dont worry if you have a lube plate, shell fit. What I like most is that the key is crazy lookin. Albeit, I am not a locksmith or criminal, I am able to pick locks rather well and quickly, this lock is beyond my skills for sure. I was reluctant to make this purchase at first, secondary to the price, but I am glad I did. If you get one of these locks, make absolutely sure that you store your spare key code (comes on the pseudo key) in your phone under notes or somewhere where you are not going to lose it. Guarantee a locksmith would have a bit of a pickle getting into this lock.

This lock is a beast. It is easy to use and high quality of fabrication really stands out.

Not as big as I thought it was, but certainly tough enough to do the job. This is really made of quality materials and would make a thief think twice about going after my rig versus someone elses.

locking mechanism feels solid. im not a lock expert, but the keys are unusually designed, so it looks like they would be difficult to copy, and the lock difficult to pick. not cheap, but worth a peace of mind, especially if leaving your RV unattended. Extra points for made in Canada, not China.

Easy to attach. Seems like it would be very hard to get off.

Wish it would fit the kingpin tighter with less play

It feels heavy and strong. I feel some degree of comfort having bought it.

Nice piece, should keep all but the most determined thieves away!

Lock is very heavy duty and well made. It is easy to install onto the fifth wheel hitch and gives peace of mind that the trailer is secure.

Bought this for our 5th wheel…..pleased with the purchase!