I love the look of this lock. The instructions were very easy to follow, from installation to setting up code. I love that you can use a code or a key to open the door. We used this on bedroom door, so kids can not get in and get into anything dangerous. This lock works great on doors with predrilled hole already or you can make your own.  I like the size of the handle and the shape of it. You can use this on a exterior or interior door. Very heavy duty lock. We love it so much we plan on upgrading other locks in the house and garage.