Kwikset works hard to understand the world you live in, so that we can do everything we can to protect it. Our interior and exterior door products provide customers with the quality, technology, durability and style they want while providing the highest level of security.. UL Single Cylinder Milan Round Rose Deadbolt with RCAL Latch and RCS Strike Matte Black Finish UL Single Cylinder Milan Round Rose Deadbolt with RCAL Latch and RCS Strike Matte Black Finish.