This Doorbell Ringer is cast in solid nickel silver. Nickel Silver is an alloy that has a warm silver color which is attained by adding nickel to bronze. Michael combines a high polished finish with brushed accents to generate a contemporary look. A stainless steel brush on a high speed lathe is used to create the brushed effects. The mirrored finish of polished nickel silver is achieved through varying degrees of sanding and buffing. Michael uses these techniques to highlight or accent the raised areas on a piece. The sand mold in our casting process can only be used once making each Doorbell Ringer truly unique. All Michael Healy Products are coated with a protective finish and carry Michael's signature confirming the authenticity and quality craftsmanship. They are also easy to install.