Very Affordable Fluted Crystal Glass Passage Door Knob Sets for Modern Doors. Includes our Original Wood Adapters to install in modern pre-drilled doors(Polished Brass) Complete set-Best set for Do-It-Yourself, Contractors do not like them For home owner installation, a little labor intense to hot glue the wood adapters Plus info for secure set screws to keep your sets trouble free. All sets are assembled and tested in the USA Guaranteed to your satisfaction, Unconditionally