Trailer Lock Fits 2 5/16 Inch Coupler, Secures Safety Chains Anti-Theft Ball Hitch Lock, Heavy Duty & Pry-Resistant Steel Trailer Hitch Locks for RV, Boat, Cargo, Camper

This is one of the best locks I've ever seen. It is unlikely anyone would be able to break it. Unless someone has a welding torch, your trailer will not be taken away by the hitch. Solid product and worth the price tag. I recommend this product.

Fits decent. The lock is a little loose but it does the job.

The housing is of good quality, however the red puck that is included is garbage. Aluminum body, Probably 1/3 the weight of the master puck lock I replaced it with. For the price it’s a good deal, even if you have to spend an additional amount on a quality puck lock.

This trailer coupler lock is built like a tank and gives me real peace of mind. The heavy-duty steel feels solid, and it locks onto the 2 5/16 inch coupler without any wiggle room. I really like that it also secures the safety chains — it’s one less thing to worry about when leaving my trailer unattended. The design makes it quick to attach and remove, but it still feels extremely secure once locked in place. Perfect for my RV and a definite upgrade from flimsier locks I’ve tried before.

Since steel is the primary material, the product is heavy and solid. No one wants to damage this part. However, the key component appears unbalanced compared to the rest of the product. It's great to have three spare keys, but they are not the well-known tubular type, which also feels somewhat unbalanced with the steel lock design decision. Regarding the red cap design, anyone familiar with locks will recognize it as a clear deterrent for thieves. While the price seems higher than average in the market, the product functions well.