The mechanical code lock is made of zinc alloy, solid, precise, secure, and durable. The cam center distance is 60 mm standard (70 mm optional); Panel: 14.2 x 4.4 x 7 cm / 5.59 x 1.73 x 2.76 inches (approx.). Lock body: approx. 14.2 x 4.4 x 6.4 cm. 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-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: inside, outside of the door. Suitable for office doors, interior doors, rental doors, composite doors, or anywhere else keys do not fit. Guarantee: You are backed by our performance guarantee. If you have any problems with your product, simply contact customer service for service, parts, replacement, or refund.