The safety padlock manufacturer's lock cylinder should have the largest weight in the safety of the lock. The trick is to look at the shape of the keyhole. The anti-theft force is "one", "ten", round, crescent shape (the teeth are on both sides of the key), ring (round and ring keyholes cannot have side grooves, especially double-sided grooves). An angle of 180 degrees, there is The side groove can be regarded as a straight line.

In fact, the anti-theft performance of these lock cylinders in the past, because of the progress of tools, only the degree is different, there is no difference in quality) Idle lock (the keyhole generally has a "cross" shape, a crescent shape, etc.). ), blade lock (need to be carefully designed in shape and space position).

The most cost-effective lock cylinder for college anti-theft bicycle locks is the "idle lock", which is characterized by ordinary keys or other objects extending into the lock cylinder, and even other lock keys of the same model can only rotate the lock cylinder freely and cannot unlock it.

If more consideration is given to the position of the lock cylinder of the solid brass padlock manufacturer, and some anti-theft barriers are designed, the current idling lock cylinder is still very safe.