No need to carry the key, enter the password to unlock it easily and experience the convenient freedom of going out without a key. Eliminate the trouble of forgetting to bring the key. STURDY AND DURABLE：The high-quality zinc alloy shell of the mechanical code lock is chrome-plated and the surface is electroplated to effectively resist serious damage and a long service life. EASY & USE: Sensitive password keys, easy to use, users can set 111 non-repeatable password combinations. No need to enter passwords in sequence. For example, if the password is "Y123", the user can also press "123Y" to unlock. WIDE APPLICABILITY: Mechanical code locks are suitable for doors with a thickness of 0.4 to 2.4 inch, such as sliding doors such as kitchens, balconies, office doors, interior doors, rental doors, composite doors or any other place that is not suitable.