First, it works, and the fact that this store had it is awesome. It is a replacement for a lock from some European company, called Fuhr, that is out of business. So great they had it, or at least procured it. And shipping, cost, and communication were excellent too. Not sure I will have much reason to shop here again, but if I do, I will for sure. So why 4 and not 5 stars? The lock is not an exact match/fit. it fits well enough to work, and work fine. But the main part on this is a little deeper than the original Fuhr lock. maybe a 1/4 inch. Worth noting if you're working with limited give. Otherwise, this lock prob saved me thousands, so I am a fan.