Features & Details Gen2 Mechanical Keyless Lock: Our mechanical keyless entry door lock, with its full mechanical structure, makes it tough for thieves. There is no need for charging or batteries. Just enjoy easy installation and operation. The updated model makes changing the password a breeze, and the adjustable left and right handles provide greater flexibility. Universal for Multiple Doors: This mechanical lock comes with screws in different length of 1.5 inch / 40 mm and 1.9 inch / 50 mm, and is compatible with door thicknesses of 1.4"-2.5" / 35-65 mm. It is suitable for courtyards, outdoor gardens, garages, storerooms, iron or aluminum doors, fence doors, etc. It is easy to install and replace. Pay attention to drilling one more hole, and the front and rear panels should have through holes. User-Friendly Lock Replacement: The lock handles can be adjusted to be used on either side, making it flexible for use. The latch size is 3.9 x 1.1 x 0.3 inch / 100 x 28 x 8 mm, and there is no need to embed the latch into the door. With a large padding plate of 6.2 x 2.5 inches / 160 x 65 mm, you won't have to make a big hole for the security lock, keeping your door looking nice and tidy. Easy to Install: Forget about hiring a locksmith. With our combined lock and handle, you only need a screwdriver for an easy installation. Installation instructions and videos will help you complete the entire installation process more easily. You don't need to dismantle the lock to change the password, making the process simple and convenient. Zinc Alloy Material: The zinc alloy construction and corrosion-resistant electroplated coating make this mechanical door lock resistant to water and rust. It ensures security under various weather conditions, whether it's a freezing winter, a scorching summer, or a rainy day, extending the lifespan of your lock.