China Military Police Riot Control Carbon Steel Security Handcuff

When the handcuffs are fixed, they can be locked and become a double lock state. At this time, the handcuffs cannot be rotated, can't be handcuffed, and can't be opened directly. You need to cancel the locking state first, and then turn into a single lock, and then release the single lock before opening. In the state of double lock, the tenon will not move, which can avoid being easily pried off the handcuffs by tools such as iron wire.

Plate handcuffs and chain handcuffs are two common forms of handcuffs, and the main difference lies in the connection of handcuffs. Chain handcuffs are an early design, with 2 to 3 iron rings connected in series between the handcuffs. Although this design shackles people's hands, the radius of movement formed by the length of the chain is still quite long, and the handcuffed person is still very convenient in action.