1. They are ultra-secure because they do not have a key that can be lost, stolen or duplicated. You need to know the correct combination to open them.
2. They are functional because they can be used to secure various types of doors, gates, safes and other items. They can also be customized with different length combinations to prevent guessing.
3. They are easy to use because they do not require any batteries, wires or electronics to operate. You just need to spin the dials to align the numbers and open the lock.
1.They are difficult to keep track of the combinations because they usually have 3-4 wheels that each can be set to any number between 0-9. There are thousands of possible combinations for a typical lock and it is easy to forget which numbers you used.
2.They are not very convenient because you need to remember and enter the combination every time you want to open the lock. You also need to change the combination regularly to maintain security.
3.They are not very durable because they can wear out over time due to frequent use or exposure to harsh weather conditions. They can also jam or malfunction if not maintained properly.
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