2nd generation mechanical combination lock: This mechanical entry door lock features a fully mechanical design, making it resistant to tampering. With easy installation and operation, it provides high security. The second generation allows for simpler password changes.

Universal compatibility for various doors: This mechanical lock comes with a variety of screws and square shafts, allowing it to fit doors with a thickness of 1.4 to 2.5 inches (35-65 mm). It is compatible with many doors, such as garden doors, garage doors, sheds, wrought iron, aluminum, and fencing doors.

Durable zinc alloy material: The bolt is made from a zinc alloy and coated with a sturdy layer. It is resistant to harsh weather conditions, ensuring reliable security all year round.

Easier door lock replacement: It features an adjustable thumb knob, suitable for left and right doors. The adjustable mounting hole distances eliminate the need for extensive drilling, preserving the door's appearance.

Auto-locking & hold open feature: The mechanical combination locks automatically when the door closes, providing extra security. The hold open feature is perfect for areas with frequent access.