General description Security Door Chain is a narrow door limiter designed to enhance the security of internal home doors. Made from high-quality SUS 304 stainless steel, this door chain offers durability and longevity while featuring a sleek matte black finish that resists daily scratches, corrosion, and tarnish. Technical specifications Body length: 12.3 cm Chain length: 17 cm Material: SUS 304 Stainless steel Finish: Matte black Usage Push the anti-theft locking button with spring for added protection against intrusion. Other information Package contents: Door Chain, Screws All metal construction ensures strength and durability; will not rust.