Usage Tips: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.