I used this trailer lock on my snowmobile trailer to deter theft for 2 winter seasons without incident, although I did have a few times when it was difficult to turn the key.

However, all geared up two days ago bright and early in the morning ready to attach my trailer to hit the fresh new 2 ft of upstate NY Tug Hill snow, this lock was frozen stiff. The key wouldn't go in, and nothing would release it..gun oil, Liquid Wrench. I wasn't sure if it had been tampered with or just frozen. I had to spend $81 to have a locksmith come out and pick it off. While he didn't cut it trying to save it, I brought it inside to thaw and two days later it is still frozen solid. The key now goes in because the locksmith hammered it back in. So I put the key in and tried to turn it with a little pressure, and the key tore in half like paper, half stuck inside, now completely rendering the lock useless. No love lost because I wouldn't trust this thing outside ever again anyway. As for the snowmobiling, I got a 4 hr late start, hit the trails by 2pm, and arrived back hours later in the dark after a great day of riding. Now I'm reading reviews to find a good cold-resistant lock to replace this piece of junk.

Buyer beware. Do not purchase this lock for any cold weather trailer.

Update 6/30/14: I hadn't mentioned that I happen to have a second one of these Reese locks on my boat trailer which was stored all winter long in a Shelter Logic shelter outside. What happens when snow mobile season ends? It's time to get the boat out, right? Well this past Sunday of Memorial Day weekend I COULDN'T because the damn lock was so in operative just by sitting idle for several months that the key wouldn't turn despite my application of unfreezer, and I had to call another locksmith and get this one sawed off with a drill for another $120! I had a set of keys for this second lock and the locksmith ripped them both in half trying to open the lock. Word to the wise: GO BUY A BETTER LOCK THAN THIS JUNK!!! 2 locksmiths alone have cost me $200!!!!
I used this trailer lock on my snowmobile trailer to deter theft for 2 winter seasons without incident, although I did have a few times when it was difficult to turn the key. However, all geared up two days ago bright and early in the morning ready to attach my trailer to hit the fresh new 2 ft of upstate NY Tug Hill snow, this lock was frozen stiff. The key wouldn't go in, and nothing would release it.. gun oil, Liquid Wrench. I wasn't sure if it had been tampered with or just frozen. I had to spend $81 to have a locksmith come out and pick it off. While he didn't cut it trying to save it, I brought it inside to thaw and two days later it is still frozen solid. The key now goes in because the locksmith hammered it back in. So I put the key in and tried to turn it with a little pressure, and the key tore in half like paper, half stuck inside, now completely rendering the lock useless. No love lost because I wouldn't trust this thing outside ever again anyway. As for the snowmobiling, I got a 4 hr late start, hit the trails by 2pm, and arrived back hours later in the dark after a great day of riding. Now I'm reading reviews to find a good cold-resistant lock to replace this piece of junk. Buyer beware. Do not purchase this lock for any cold weather trailer. Update 6/30/14: I hadn't mentioned that I happen to have a second one of these Reese locks on my boat trailer which was stored all winter long in a Shelter Logic shelter outside. What happens when snow mobile season ends? It's time to get the boat out, right? Well this past Sunday of Memorial Day weekend I COULDN'T because the damn lock was so in operative just by sitting idle for several months that the key wouldn't turn despite my application of unfreezer, and I had to call another locksmith and get this one sawed off with a drill for another $120! I had a set of keys for this second lock and the locksmith ripped them both in half trying to open the lock. Word to the wise: GO BUY A BETTER LOCK THAN THIS JUNK!!! 2 locksmiths alone have cost me $200!!!!