The mechanical code lock is made of zinc alloy, solid, precise, safe and durable. Tongue center distance: standard 60 mm (option 70 mm); panel: 14.2 x 4.4 x 7 cm / 5.59 x 1.73 x 2.76 inch (approx. Lock body: approx. 14.2 x 4.4 x 6.4 cm. There is no has only one set of passwords, and the digits are not repeatable.For example, if the password 123456 is set to 231456, it can be opened.1-11 digit combination number padlock.The password Recommended password is set to 4-6 digits With screws and English manual, easy to install Applicable door thickness: 30-60mm Applicable type: interior, exterior of the door interior doors, rental doors, composite doors or any other place where keys are not suitable.