I have been looking for a gate lock like this for years. I cannot imagine why these are not more known, it's the perfect solution to a very common problem. I have asked fence companies, checked the big box stores, looked online. It seems like no one has ever considered producing a two-way lock for fences. There is a generic one that HD sells that has a little flip open door with a cable attached... total junk. There are some that require keys... how is that convenient?? I am out in my yard, I don't have my keys. I want to be able to use a combo lock to get in. Of course we can lock gates from inside, but then you have to go through the house to open them. Again, not convenient. This solves every problem. I have my gates locked from the inside. I can easily unlock to go out. I have a combo to open them from the outside. I can give that combo to my lawn guy, pool guy, so my gates stay locked. No batteries, no wiring, its simple and sturdy. I am probably going to buy a few spares, in case they ever get worn out or weathered and I want to swap them out. My only complaint is changing the combo requires almost a complete disassembly, that is an annoyance as installing them was a little tricky to line up the latch lever. It would be nice if the internal panel could be removed without removing the entire latch mechanism. Well, another complaint is swapping them from left hand to right hand was annoyingly complicated. Better to sell them as either left or right and have them fixed correctly at the factory.