Easy to Assemble: Comes with screw package, easy to install. If you have any problem about our mechanical password security coded lock, please feel to us, we will solve it for you in the first timeKeyless Entry Door Lock: Mechanical coded door lock does not require a key and a door card, just enter the mechanical code to unlock it, and you can change the code at any timeWide Use: Push Button Keypad Lock fit for door thickness: 30-60mm, suitable for office doors, interior doors, rental doors, composite doors, residential homes, , apartment buildings, etc.High Security: 2- 8 digit combination keyless entry door lock. The recommended password is set to 2-4 digits. There is only one set of passwords, and the numbers are not repeatable Material: Keyless mechanical combination lock is made of zinc alloy material, smooth surface, which is very ,