Feature: Delicate processing and thoughtful design provide enhanced protection. Suitable for door thicknesses of 35 mm to 60 mm. Compatible with wooden doors, metal doors, and bedroom doors. Easy to install—replace your door viewer in under 5 minutes with no tools required. High-quality optical lens helps enhance home security. A sturdy, heavy-duty cover improves privacy—when closed, it prevents outside viewers from seeing inside your home. Specification: Condition: Color: Brushed Chrome / Green Bronze / Red Bronze / Gold (Optional) Material: Pure Copper + Optical Glass Suitable for hole diameter: 28 mm Suitable for door thickness: 35 mm – 60 mm Size: As shown in product image Package Includes: 1 x Door Viewer Note: Please allow for a 1–3 cm measurement tolerance due to manual measurement. Color appearance may vary slightly due to screen settings and lighting conditions.