Enhance your home security with this high-quality Pure Copper Door Viewer, designed to fit doors with a thickness of 15-25mm (0.6-2.0 inches). Suitable for wood, fiberglass, or metal doors, this door viewer offers a wide range of applications to help you easily and safely identify visitors without opening the door. Key Features: · Wide Compatibility: Fits doors with thickness from 15mm to 25mm (0.6 to 2.0 inches) and requires an applicable hole diameter of 14-20mm (0.6-0.8 inches), making it ideal for most residential and commercial doors. · Premium Pure Copper Construction: Crafted from durable pure copper with a sleek steel color finish, ensuring long-lasting performance and resistance to wear and corrosion. · Easy Installation: Surface-mounted design allows for quick and tool-free installation or replacement within 5 minutes, providing convenience and saving time. · Enhanced Security Protection: Effectively prevents burglary, intrusion, and home invasion by allowing you to safely view visitors from behind a locked door. · Clear and Wide Viewing Angle: Offers a comprehensive view from head to toe of anyone standing outside, enabling you to easily recognize visitors and assess safety before opening the door. · Adjustable Length and Anti-Theft Design: The viewer length can be adjusted for a perfect fit, featuring anti-twist, anti-skid, and pry-proof functions. The finely threaded inner wall prevents tampering and protects against forced removal or damage by thieves. Specifications: · Material: Pure Copper · Product Color: Steel Color · Length: Approx. 3cm / 1.2in · Applicable Hole Diameter: 14-20mm / 0.6-0.8in · Applicable Door Thickness: 15-25mm / 0.6-2.0in · Product Weight: Approx. 29g / 1.0oz · Installation Method: Surface mounted, opening hole Package Includes: · 1 x Pure Copper Door Viewer This durable and secure door viewer is an essential addition to your home safety measures, providing peace of mind and reliable visitor identification with ease and convenience.