When the anti theft door lock is replaced, the original world hook is not needed, is it okay?

If you feel more comfortable changing the lock cylinder, you can change it yourself. Of course, it is still necessary to buy a good lock cylinder, which is of good quality and performance (it is recommended to use a C-grade lock cylinder). Then I came back and changed it myself. >>>More

First, which is the best anti-theft door lock cylinder?

1. Anti-theft door lock cylinder level: The anti-theft door lock cylinder used on the market is basically divided into three levels, namely A-level, B-level, and super B-level (also known as C-level). According to the "National Mechanical Lock Standard", the anti-theft door lock cylinder has two levels, A and B, and the super B level is an enhanced version of the B level developed by the entrepreneur. >>>More

The size of the lock cylinder of the anti-theft door, if you have a strong hands-on ability, you can remove it and measure it, based on the distance between the middle screw hole and the two keyholes, of course, if you are troublesome, you can simply measure it, as shown in the figure below, you only need to measure L1 + L2. >>>More

It is possible that yes, whether the installation is not the original brand model, the outer protection of the lock hole is not the same for each model, concave, convex, flat, all, the thickness of the door is different, and the length of each model of the lock cylinder will also deviate from the ---

1. Remove the handle, 2. Remove the lock protector that protects the lock cylinder 3. There is a screw in the middle of the lock body on the side of the door leaf, and the lock cylinder can be taken out after removal (some types of lock cylinders can only be taken out by turning the key a certain degree).