Features: Material: Made of metal and steel board, solid and compact construction for durability. Adopts Metal Lock Core: Use password to enter the metal lock core for security and long term use. Concave Teeth Design: Concave teeth design, can better cover tight box, tight seam, safe and durable. Easy to Install: With 2 pre-drilled holes and can be fixed on the wall with expansion pipe and expansion screw. Note:Without key tags, the key tags are not included, just for showing in the pictures. How to Change Password: Step 1: Initial password Initial password is 000; Step 2: A-B adjustment: Dial the code lock key of the inner box from A to B; Step 3: Change the password Change the password to the number you want, such as "888"; Step 4: B-A Adjustment Push the password adjustment key back to A from B, and the password is set. Specification: Material: Metal+Steel Board Color: Black, White Types(Number of Holding Keys): 6Keys, 28Keys Size(Outer): Approx. 6Keys, 28Keys(L*W*H) 6Keys: 15*12*7.5 cm/5.91*4.72*2.95 inch 28Keys: 25*20*7.5 cm/9.84*7.87*2.95 inch Package included: 1 xKey Cabinet Security Box Notice: 1. Due to the light and screen difference, the items color may be slightly different from the pictures. 2. Please allow 0.5-2cm differences due to manual measurement.