Do all handcuff keys fit in all handcuffs?

No. Most all cuffs used by US police departments use interchangeable keys. That’s simply for expediency so that any officer can release the suspect if needed. However, there are literally hundreds of different kinds of cuffs available.

Are all handcuffs keyed the same?

Most modern handcuffs in Canada, the United States, the United Kingdom and Latin America can be opened with the same standard universal handcuff key. This allows for easier transport of prisoners. However, there are handcuff makers who use keys based on different standards.

Do police use double lock handcuffs?

Never, unless you want your prisoner to escape. Officers are taught at the academy to always double lock handcuffs. One reason is to help prevent a cuffed prisoner from “shimming” open a set of cuffs. Shimming is to insert a thin piece of metal between the teeth of the cuffs to make it open up without using a cuff key.

Do handcuffs come with a key?

All handcuffs naturally come with a set of keys. These will typically be metal keys with a double-lock pin (if applicable) on a small keyring. These are great to have on hand and don’t require a separate purchase since they come with the handcuffs.

Why do handcuffs have a universal key?

The purposeful design of the universal handcuff key means that most handcuffs can be opened with the same basic universal key shape. This is intentional; it allows for easy transport of prisoners between locations, jurisdictions, facilities, etc.

Do police use thumb cuffs?

Thumbcuffs were originally intended for use by detectives, narcotics officers and off-duty policemen, their size allowing them to be carried in the pocket. Thumbcuffs are rarely used due to an increased possibility of injury, most commonly by tight cuffs blocking blood circulation. Handcuffs are usually used instead.

When should you double lock handcuffs?

While the mechanism of the double lock may vary somewhat depending on manufacturer, they all serve the same two-fold purpose: to prevent potential nerve damage or loss of circulation in the event that the cuffs are tightened, and to prevent the cuffs from being picked.