Full steel latch with double cylinder gear structure armored security door lock

Full steel latch bolt can change the direction freely, which made it easy to install and safe to use.

Compared with domestic ordinary lock, the key is lighter when rotating and the bolt is much more flexible when stretching. By using the principle of gear case, gear and the above Parts of the lock core are connected by the top cover with threaded hole. So that the core parts of the lock is difficult damaged by external forces, along as whole, this particular case structure can be described as unique around the world.