Description: Applicable Doors: Work both left and right handed doors due to adjustable handle direction. The keyless door lock with keypad is suitable for exterior or interior doors with thickness 30-65mm(1.18-2.56inch), such as wooden fence, courtyard gate, aluminum alloy door, wrought iron doors, and bedroom door. Mechanical & Keyless: Don't install charge batteries. Simple installation and operating principle, providing high level of anti theft performance. Our keypad door lock is not easily pry open that provides you safer living environment. Easily Set Up & Installation: It is easily set and change the codes. Password be 3-4 digits, be used in any order. Durable & Waterproof: The metal digital door lock is made of zinc alloy, surface treatment, hard, waterproof, sunproof, rust proof, anti theft. Advanced Matte Silver: The matte surface makes door lock more beautiful and comfortable to hold. Specification: Material: Zinc alloy Size Chart: Lock Panel size: 43mmx107mm/1.69inchx4.21inch Package Includes: 1 Mechanical Keyless Door Lock 1 Pack of Hardware 1 Manual