HINDSON Same Key Lock, 4 Lock Open With Single Key, Round 65, Double Locking, Size 65mm

• A hardened shackle is a type of lock shackle that has been treated to make it more resistant to cutting, sawing, and other forms of physical attack. The process of hardening the shackle typically involves heating the steel to a high temperature and then cooling it quickly, which makes the steel more durable and resistant to damage.
• Double locking refers to a locking mechanism in which a lock has two locking points that must be engaged in order for the lock to be secure. This is typically used in high security situations, such as in safes or vaults, as it makes the lock more difficult to pick or force open.
• lock with 3 Keys Each It is very convenient to having 3 keys so that all members of the family can carry a separate key with them.
• 8 lever lock is a type of mechanical lock that uses 8 levers to secure the lock mechanism. The levers act as obstacles that must be correctly aligned in order for the lock to open. Each lever is a small metal bar that sits in a chamber within the lock.