[Reprogrammable Keyless Security] With our four-wheel reprogrammable combination deadbolt, you can choose your favorite combination from 10,000 different combinations. Passwords can be transferred without problems. Security is ensured by the ease of setting and resetting the code. You don't need to carry many keys and change locks, because it uses digital code method. [Water-resistant and durable zinc alloy material]. The deadbolt combination lock is made of zinc alloy for durability and is weather resistant all year round. The lock body is coated with anti-rust coating to be waterproof and the bolt dial is chrome plated. Sliding combination lock with anti-pick dial, 10mm diameter solid steel sliding bolt and one-way security screw. [2 types of installation] Lock sleeve installation: when the frame of the door is on the same plane as the door, the installation of the metal sleeve and the bolt is used. Side door installation: When the door frame forms a 90 right angle to the door, the ring + bolt installation method is used on the side door, and the door frame must be opened. [Easy to use]. To unlock, simply dial the code and pull the handle up to open the door lock code. To lock, simply dial the code, lower the handle, insert the pin into the keyhole, then dial the code, and the garden shed lock is locked. After opening the lock, be sure to dial the code in time to avoid accidental locking. [Wide Scope] Measuring 4.76 x 1.81 x 1.57 inches, the lock of combination door is easy to install in the most compact spaces. Whether protecting a shed, barn, cabinet, door, iron gate, wooden door, fence or window. It is the ideal locking option for both indoor and outdoor environments.