Handcuffs

Handcuffs hold a person's wrists close together.

They are made of metal or plastic. Metal cuffs can use a chain. Some use a hinge to stay still.

Police use them to stop people from escaping. A small key is needed to open them.

Some cuffs go around the ankles too. These are called legcuffs. They make it hard to run away. They help keep everyone safe.

Handcuffs are tools used to hold a person's wrists together.

They help police keep people from escaping. Most handcuffs are made of metal like steel.

There are three main metal styles. Some use a short chain to connect the cuffs. Others use a hinge. Hinged cuffs are very secure because they allow less movement. A third type uses a solid bar.

Some police use plastic ties instead of metal. These are light and easy to carry. They are often used during large protests.

There are also legcuffs for a person's ankles.

These make it hard for someone to run. Sometimes, police use both handcuffs and legcuffs at once. They might also use a belly chain. A belly chain is a belt around the waist. The handcuffs attach to this belt. This keeps the person's hands near their waist.

This can be more comfortable for long trips.

Handcuffs are tools used to hold a person's wrists close together.

They are designed to stop people from escaping. Most handcuffs have two parts that join together. They might be linked by a chain, a hinge, or a solid bar. Each cuff has a rotating arm. This arm works with a ratchet to lock the cuff. Once it is closed, it cannot be opened without a key. This makes it very hard for a person to move their hands.

Because of this, many tasks become impossible to do.

There are three main ways metal handcuffs are made. The first type uses a short chain to connect the two cuffs. The second type uses a hinge to join them. Hinged cuffs are very secure because they allow very little movement. The third type uses a rigid solid bar. These bars are bulky to carry, but they allow for different ways to use them. Some police forces, like those in the United Kingdom, use Hiatt Speedcuffs. These are a type of rigid handcuff.

Some people even add extra boxes over the hinges to make them even more secure.

History shows many different ways people have tried to make restraints. In 1933, the Royal Canadian Mounted Police used something called "Mitten Handcuffs." These were meant to stop people from grabbing things like a gun. However, they were never very popular. The National Museum of Australia has many old handcuffs in its collection. These include types called "T" type, "D" type, and "Figure-8" handcuffs.

Most metal cuffs are made from carbon steel, stainless steel, or aluminium. Some are even made from plastic polymers.

Sometimes, police use plastic ties instead of metal. These are often called wrist ties, flexicuffs, or zipcuffs. They are very light and easy to carry in large amounts. This makes them good for big protests or riots. Airlines also use them for disruptive passengers. Plastic cuffs are disposable, so they must be cut off to be removed. This can be hard if a person needs to be fingerprinted. Some new plastic cuffs can be opened with a key, but they are not as strong as metal.

Other tools like legcuffs are used for a person's ankles.

These are larger so they can fit around ankles. They help stop someone from running away. Sometimes, police use both handcuffs and legcuffs together. They might also use a belly chain around the waist. The handcuffs attach to this belt to keep hands at waist level.

This can be more comfortable for long trips. Some people even use a combination called a "full harness" for extra security.

Handcuffs are specialized restraint devices designed to secure a person's wrists in close proximity to one another.

Their primary purpose is to prevent suspected criminals from escaping while in the custody of law enforcement agencies. These devices function through a mechanical locking system involving two cuffs. Each cuff contains a rotating arm that engages with a ratchet mechanism. Once the cuff is closed around a wrist, the ratchet prevents it from being reopened without a specific key. This mechanical design restricts wrist movement to only a few centimeters or inches, making many physical tasks difficult or impossible for the restrained individual.

Contemporary metal handcuffs generally fall into three distinct structural categories. The first type is the chain cuff, where the two metal rings are linked by a short length of chain. The second type is the hinged cuff, which uses a hinge to connect the two parts. Because hinged cuffs allow much less movement than chain cuffs, they are considered more secure by many officers.

The third type consists of rigid solid bar handcuffs. While these are bulkier to carry, they permit several different variations of cuffing. For example, Hiatt Speedcuffs are a type of rigid handcuff used by most police forces in the United Kingdom. Some agencies even add accessories, such as boxes that fit over the chain or hinge, which can be locked with a padlock for extra security.

Materials used in manufacturing vary depending on the required strength and cost. Metal handcuffs are often manufactured from carbon steel, stainless steel, or aluminium. Some modern versions are made from synthetic polymers. In cases where a person has an exceptionally large waistline, standard handcuffs might not reach around both wrists. In these instances, officers may use two separate pairs of handcuffs. They connect one cuff from the first pair to one cuff from the second pair, then apply the remaining open cuffs to the wrists. Manufacturers also produce oversized handcuffs to address this specific need.

Plastic restraints offer a different approach to security and are often called wrist ties, flexicuffs, or zipcuffs. These are lightweight, disposable strips that resemble electrical cable ties. Because they are easy to carry in large quantities, they are well-suited for large-scale protests, riots, or military use. Airlines have also begun using these plastic restraints to manage disruptive passengers. However, disposable restraints have drawbacks. They must be cut off to allow a person to be fingerprinted or to attend to bodily functions. Some newer plastic models can be opened with a key, but they are generally less strong than traditional metal handcuffs and may be more likely to cause nerve or soft-tissue damage.

Beyond the wrists, law enforcement may use legcuffs to secure a person's ankles.

Legcuffs have a larger inner perimeter than handcuffs to accommodate the anatomy of the ankle. Some models use an elliptical shape to minimize pressure on the Achilles' tendon. Standard leg irons typically feature a longer connecting chain than wrist handcuffs. These are used to prevent running during transport or to manage extremely aggressive behavior. In some extreme cases, officers may use a technique called "hog-tying," where the handcuffs and leg irons are connected. This practice is highly controversial because it has led to deaths from positional asphyxia, resulting in many locations banning or strictly restricting the maneuver.

For higher levels of security during transport, officers often use combinations of different restraints. A prisoner might wear handcuffs augmented by a belly chain, which is a metal, leather, or canvas belt attached to the waist.

The handcuffs are secured to this chain to keep the hands at waist level. This can provide a degree of comfort during long periods of internment while still restricting movement. If a handcuff cover is used to hide the keyholes, the restraint becomes even more severe. For maximum security, a "full harness" may be used, connecting the handcuffs, the belly chain, and the leg irons all together.

Safety and medical considerations are vital when applying these devices. Many modern handcuffs include a "double lock" feature. This uses a detent to stop the cuff from ratcheting tighter, which prevents nerve damage or loss of circulation if a person struggles. There are different types of double locks, including lever locks, push pin locks, and slot locks.

Additionally, the way hands are positioned matters for health. Since the mid-1960s, many agencies have moved toward handcuffing hands behind the back. However, specific departments favor placing palms together to help prevent a condition known as radial neuropathy. Because a restrained person cannot use their hands to break a fall, officers must be prepared to catch them to prevent injury.