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.. Single Cylinder Interior Milan Lever Trim with Round Rose New Chassis Satin Nickel Finish Single Cylinder Interior Milan Lever Trim with Round Rose New Chassis Satin Nickel Finish.