Square Circle Padlock

Square-Circle security lock is particularly designed for social security, it contains a good character, and is specially suitable for those important places, such as family, warehouse, office and so on.1. Against versatile key: The internal construction of the lock has innovated and modified from the usual ball to the special multiple layers one. So the versatile key can not turn on the lock in any way.2. Against saw: Hardened steel shackle can not be cut by saw.3. Avoid being prized: The device contains a very hard Arsteel ball to pin the shackle and it is so strong that it can not be prized by force.