The anti theft door lock, the small tongue key, and the inside can t be controlled

Hello, this is a good solution. There are three methods, one is to scrape some pencil powder with a knife yourself, sprinkle it on the key, and then insert it into the keyhole to let the powder enter the lock cylinder. Two kinds of hardware store or binary store to buy "sewing machine oil", must be this oil other can not, this is great, not easy to insert the key, the door is not easy to hit, just a little lower. >>>More

Some have five, some have six, because the brand is different.

The so-called BC lock cylinder is just a change of soup and not a change of medicine, the exposed locks are easy to be pried or opened by technology, it is recommended to install M C K invisible remote control lock directly behind the door, no exposed no lock hole, one of the anti-theft weapons, and not afraid of failure, dual system humane design for you to protect your home.

The key of the cross-shaped lock cylinder can be matched, but the key of the S-shaped and M-shaped lock cylinder cannot be matched, but the lock cylinder can be changed. >>>More

Why can't the anti-theft lock at home be opened when the key is screwed? The master dismantled on the spot, and finally found the reason and shared the dry goods.