• 2nd Generation Mechanical Combination Lock: This mechanical keyless entry door lock features a fully mechanical design, making it resistant to tampering without the need for charging or batteries. With easy installation and operation, it provides high security. The second generation allows for simpler password changes, and the adjustable left/right handles provide greater flexibility

• Universal Compatibility for Various Doors: This mechanical keyless door lock comes with a variety of screws and square shafts, allowing it to fit doors from 1.4 to 2.5 in (35-65 mm) thick. It's compatible with a wide range of doors, including gates, garden doors, garages, storage rooms, wrought iron, aluminum, and fence doors

• Durable Zinc Alloy Material: The latch bolt is crafted from high-quality zinc alloy and coated with a corrosion-resistant electroplated layer. This keyless mechanical combination door lock is built to withstand harsh weather conditions. It's resistant to rust and water, ensuring reliable security in all seasons, from chilly winters to hot summers and rainy days

• Easier Door Lock Replacement: This mechanical door lock features an adjustable thumb knob, making it suitable for both left and right doors. The adjustable mounting hole distances (2.3 in / 60 mm and 2.7 in / 70 mm) and wider base plates avoid the need for large drilling, keeping your door's appearance intact while providing superior security

• Automatic Locking & Hold-Open Mode: The mechanical combination door lock automatically engages when the door closes, so you never have to worry about forgetting to lock it. The hold-open mode is ideal for areas with frequent access, providing easy entry and exit