MATERIAL USED: The doorbell button is made with premium quality Antique cast iron. The shape is designed in a round shape which gives an eye-catching look to the doorbell. WIRED DOORBELL PUSH BUTTON: This electric doorbell button is designed to operate a standard door chime located within a home. “PRESS” Written on the top of the bell. It must have hardwired into the wall. It is compatible with existing two-wire electrical systems. PREMIUM QUALITY BUTTON: The quality and style to your entryway with this antique doorbell button. It is the perfect choice for your vintage decor or mid-century home. PRODUCT DIMENSIONS: 60 mm Diameter. This is an ideal size for any doorbell. It is a universal size that will be suitable for any kind and size of door. EASY INSTALLATION: It Includes installation hardware such as high-quality screws (1 extra). For fixing screws on any wooden surface, mark and drill pilot holes with a drill bit appropriate for the mounting hardware. Put a drop of oil on the screw tip, Insert and tighten the screw. Do not over torque the screw as it may break. The screws supplied are for wooden surfaces. For Metal surfaces other suitable screws must be used., Manufacturer: Assorted Collections