1. The car comes with a lock. The structure is very simple and can be opened with just a few clicks. It is also too thin and very unsafe.
2. Horseshoe lock is a circular lock that surrounds the wheel. Most lock cylinders are easily cracked and are unsafe.
3. Iron chain lock The iron chain lock appears to be strong, but it is easily cut by pliers. The chain type with one link after another is basically unable to withstand the violence of pliers. Only those with thick enough steel wires can be considered.
4. U-shaped locks, as long as they are not inferior locks, are much stronger than iron chain locks. inferior locks can be opened with bare hands in two seconds. U-shaped locks are divided into one-point fixation and two-point fixation, which depends on whether the U-shaped and one-shaped locks can be separated. The weakness of the one-point fixed U-shaped lock lies in the intersection between the U shape and the straight shape. The hinge structure will inevitably cause insufficient thickness and can be cut open by pliers. The two-point fixed U-shaped lock has good anti-theft performance and the theft rate is very low.
U-shaped lock key shape anti-theft index: straight shape < cross shape < staggered shape < crescent shape < O shape < hollow type
5. Idle lock The lock cylinder can be idle and has good anti-pry effect. It is a car lock with high anti-theft performance on the market, but it is not cheap.