Description: Material: The Mechanical Door Lock is made of premium zinc alloy material with a long service life.Easy to install: The Mechanical Keypad Door Lock can be easily installed on most standard doors. It is easy to install and saves you time and energy.Wide Application: The multi purpose Mechanical Door Lock is very suitable for use in homes, offices, apartments, etc., suitable for wrought iron doors, courtyard doors, passage doors, outdoor doors, etc.Waterproof: The premium Keyless Door Lock has a sturdy structure, is waterproof, has sensitive buttons, a 1-11 digit password be set, and is suitable for both indoor and outdoor use.Easy to use: The mechanical Keyless Entry Door Lock is easy to use, with a handle, comfortable to hold, suitable for exterior or interior doors, such as wooden fences, courtyard gates, bedroom doors, etc. Specification: Material: Zinc Alloy Size Chart: 4.1cmx14.1cm/1.61inchx5.55inch Package Includes: 1 Mechanical Keypad Door Lock Note: Please allow slightly errors 1-2cm differences due to manual measurement.