In order to improve the safety of the pin lock, the more difficult and more complicated ball locks are constantly appearing. At present, the pin locks have various structures such as one-way, two-way, three-way and four-way marbles, as well as plane, double-sided and multi-faceted. Double-row double-sided, multi-row multi-faceted marble structure and combined marble structure. Generally speaking, the more complicated it is, the harder it is to be turned on. At present, different security levels are set for different locks, which are A, B, and Super B, and the corresponding security is higher.