The mechanical combination lock is made of zinc alloy, which is strong, accurate, safe and durable. Tongue center distance: standard 60mm (optional 70mm); 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 codes, and the numbers It cannot be repeated. For example, if the password 123456 is set to 231456, it can be opened. 1-11 digit combination number padlock. The password is recommended to be set to 4-6 digits. With screws and English instructions, easy installation. Applicable door thickness: 30-60mm. Applicable type: indoor door, exterior door, interior door, rental door, composite door or any other place where a key will not fit.