This is a well-priced, good quality doorknob and lock. The knob and key are both made of sturdy material that feels good to the touch, and doesn't damage easily.There's just one thing: I am a highly forgetful person. This doorknob was installed on an interior door: the door to my bedroom. One chilly, late evening, I stepped out of the room and impulsively locked the door behind me.. without bringing a key with me.What began then was an adventure in the dead of night that kept both myself and my boyfriend awake until 4am on a school night (we both attend college). We tried to scale the condo to get to the second floor window using stacked storage bins, a spare door, a step ladder, and one another. However, we are both quite short (I am 4'11" and he is 5'1"). He called the police (?), and they offered to come over and help us break our door open, but would not assist us in climbing through the second story window (reasonable). We declined the kind offer. We then visited our neighbors and borrowed their ladder, and in her infinite wisdom, one of our neighbors gave us a sturdy hammer.Once climbing in to the room didn't work, we decided to try to pick the lock. I searched for tutorials and we took our turns attempting to follow the directions of a man on the screen. To no avail. I called around for locksmiths, but it was already around 2am at the time and no one available was within our price range.So we gave up. We looked at the hammer. Our last option.It was just past 4am by the time we were able to enter our bedroom. It took us hours of labor to get the door open. The knob caved in (eventually), but the lock held firm and could not be tampered with using any tools. To summarize: this is a good freaking door knob. Or we're just shite thieves, which I suppose isn't entirely unlikely. We're choosing to focus on the positives here, though -- this is a solid knob with a satisfying, well-built locking mechanism. You will most definitely want to have a backup key hidden somewhere in your house, or an alternative method of entry if you're anything like us.