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 7cm / 5.59 x 1.73 x 2.76inch (Approx. Lock Body: Approx. 14.2 x 4.4 x 6.4cm. It There is 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-combination number padlock 11 digits. The recommended password is set to 4-6 digits. With screws and English manual, easy to install. Applicable door thickness: 30-60 mm Applicable type: interior, exterior of the door. Suitable for office doors, interior doors, rental doors, composite doors or anywhere else keys won't fit. Warranty: You're backed by our performance assurance.If you have any issues with your product, simply contact customer service for service, parts, replacement or refund.