The main element of the key hole here you see is the finish it gets. There are more than one finishes available for this key hole. It is made of silicone bronze that is an alloy with a lot of sturdiness. The key hole can stay new for a really long time when you mount it on the doors. This is sealed by the 5 year warranty that you get with the product. You get the product in a single piece and it can be delivered to your doorsteps for a great price.