Product Name: Combination Lock with Key Model NO.: YF21183 Usage: Household, Commercial, Industrial Material: Alloy Structure: Password Locking Type: Pendant Trademark: NA Transport Package: White Box Specification: 65*29*12MM. Origin: China HS Code: 83014000 Product Description Combination lock with key1, 4 Digits; unlock by password.2, Material: zinc alloy;3. There is one set of supervisor key which can open one batch of all locks for managingpurpose.4, With master key,customer is able to get back combination if forgot.5, Unit size: 65*29*12MM.