As long as you read and understand the product specs, and order the correct item, you will not be disappointed, because these are amazing... but be aware that Amazon's compatibility chart is only telling you whether the lock is compatible with your vehicle model's key -- not your vehicle's hitch receiver. This means for any given vehicle, there may be two "compatible" models, but only one of them will be right for your specific situation. These locks can be purchased with *either* a 1/2" pin or a 5/8" pin. (Not both.) The model with a 1/2" pin is only intended for use with lighter-duty Class I and II hitches, which have a receiver size of 1.25" or less and use a 1/2" pin. The 5/8" lock model may be compatible with your vehicle's key, but if you have a Class I or II hitch, the pin's diameter is probably too big to fit. Conversely, the lock model with the 5/8" pin is intended for use with heavier-duty receivers of Class III/IV/V which have a receiver opening of 2.0" or larger, and require a 5/8" pin. If you have one of these receivers, again, there is probably a 1/2" model compatible with the *key* to your vehicle, but the pin is both too small in diameter for safe and stable operation, and too short in length to work properly with your hitch system. Find the lock whose mechanism matches the key style of your vehicle *and* that matches the class of your towing equipment (based on the pin size), and you will have selected the right product. This really seems like a pretty slick piece of engineering. The lock comes with two seals to indicate that it has never been used. The first time you insert your vehicle's key, the lock learns to recognize the specific cut of your key, and that key (including identical copies of the key, of course) is the only key the lock will ever recognize. (For that reason, one should never buy a "used" BOLT lock -- they are permanently mated to the first key they are used with... hence the seals. If you sell your vehicle, give the new owner your lock.) If you know the difference between the operating "feel" of a cheap lock and a quality lock, I expect you'll be pleased here, too -- the lock feels very well-machined, and there's no "play" in the key mechanism. It's heavy. Because the lock is designed to always be locked, when you turn the key to unlock it, the key springs back to the locked position -- so while it's not strictly impossible to operate with only one hand, it's admittedly easier if you have two hands available to remove it: one to turn the key and hold it in the unlocked position, the other to hold the lock body stationary in the rotational direction of the key, and then pull it off the pin.
