1. The key must be required to unlock and lock.

2. The lock cylinder is flat tumbler mechanism, which has better anti-theft performance. When unlocking, the lock can be unlocked only after it is completely set.

3. Blade lock cylinder padlock without spring, so it is not easy to break in this respect. When unlocking, the lock lever will not pop up automatically like a normal padlock, but should be pulled by hand. A clamping ring is loose after locking, which is not a quality problem. This is the characteristic of this lock and does not affect its anti-theft performance and use.